Chicken Spaghetti Casserole Recipe

Chicken spaghetti casserole is a timeless comfort food classic, a dish that evokes memories of family gatherings and cozy weeknight dinners. In my own kitchen, this recipe has become a beloved staple. There’s something undeniably satisfying about the creamy, cheesy, and savory combination of chicken, spaghetti, and vegetables, all baked to golden perfection. What I appreciate most about this particular version is its simplicity and adaptability. It’s not overly fussy, using readily available ingredients, yet it delivers on flavor every single time. My family, especially my kids, absolutely devour it. The recipe is also incredibly forgiving and perfect for making ahead, which is a lifesaver on busy days. Freezing it, as this guide details, takes the convenience factor to a whole new level. Imagine coming home after a long day, knowing that a delicious, home-cooked meal is already prepped and waiting in the freezer, ready to be baked. This recipe isn’t just about food; it’s about creating moments of togetherness and making life a little easier and a lot more delicious. Whether you’re a seasoned cook or just starting out, this chicken spaghetti casserole is a recipe that will quickly become a cherished part of your culinary repertoire.

Ingredients

This recipe uses simple, wholesome ingredients to create a dish that is both comforting and flavorful. Here’s everything you’ll need to make this delicious chicken spaghetti casserole, perfect for freezing and enjoying later:

• 1 (4-lb.) Whole Chicken: The star of the show, a whole chicken provides rich, flavorful meat and forms the base of our casserole. Using a whole chicken allows you to control the quality of the meat and yields delicious homemade chicken broth, which we’ll use to cook the spaghetti. Opt for a good quality chicken for the best flavor.
• 4 Tbsp. Kosher Salt: Salt is crucial for seasoning the chicken and the broth. Kosher salt is preferred for its clean taste and ease of use. It enhances the natural flavors of the chicken and other ingredients.
• 1 Bay Leaf: This aromatic leaf adds a subtle depth of flavor to the chicken broth as it simmers. Bay leaf infuses a slightly peppery and floral note, enhancing the overall complexity of the casserole.
• 8 oz. Uncooked Spaghetti: Spaghetti provides the perfect pasta base for this casserole. Breaking it into thirds makes it easier to manage and ensures it cooks evenly within the casserole. You can use regular or whole wheat spaghetti, depending on your preference.
• 3 Tbsp. Butter: Butter adds richness and flavor to the vegetable sauté. It helps to soften the vegetables and creates a flavorful base for the casserole sauce. Unsalted butter is recommended so you can control the overall saltiness of the dish.
• 1 Large Yellow Onion, Chopped: Onion is a foundational aromatic vegetable in many cuisines, and it’s essential in this casserole. Yellow onions provide a balanced flavor that becomes sweet and mellow when sautéed. Chopping the onion into small pieces ensures it cooks evenly and blends seamlessly into the casserole.
• 1/2 Medium-Size Green Pepper, Coarsely Chopped: Green bell pepper adds a slightly sweet and slightly bitter note, along with a pleasant crunch and vibrant color. Coarsely chopping the pepper ensures it retains some texture after baking.
• 2 Celery Ribs, Chopped: Celery is another classic aromatic vegetable that adds a subtle savory and earthy flavor to the casserole. It also contributes a bit of texture. Chopping the celery into small pieces allows it to cook evenly and blend into the casserole.
• 2 Garlic Cloves, Minced: Garlic is a powerhouse of flavor, adding pungency and depth to the casserole. Minced garlic releases its aromatic oils effectively when sautéed, infusing the vegetables and sauce with its characteristic taste. Fresh garlic is always preferable for the best flavor.
• 1 (10 3/4-oz.) Can Cream of Mushroom Soup: Cream of mushroom soup is a convenient and creamy base for the casserole sauce. It provides richness and helps to bind all the ingredients together. Look for a good quality cream of mushroom soup for the best flavor and texture. You can also explore low-sodium options to control the salt content.
• 1 (28-oz.) Can Diced Tomatoes, Drained and Chopped: Diced tomatoes add acidity, sweetness, and a vibrant color to the casserole. Draining and chopping them further helps to control the moisture content and ensures they distribute evenly throughout the dish. Use good quality canned diced tomatoes for the best flavor.
• 1 tsp. Worcestershire Sauce: Worcestershire sauce adds a complex umami flavor that enhances the savory notes of the casserole. It contributes a subtle tanginess and depth that rounds out the overall taste profile.
• 4 Drops of Hot Sauce: Hot sauce provides a subtle kick and adds another layer of flavor complexity. The heat is not overpowering but rather enhances the other flavors. You can adjust the amount to your preference or use your favorite brand of hot sauce.
• 1/8 tsp. Freshly Ground Black Pepper: Freshly ground black pepper adds a sharp, pungent flavor and a touch of warmth. Grinding it fresh just before use maximizes its aroma and flavor.
• Vegetable Cooking Spray: Cooking spray is used to grease the baking dish, preventing the casserole from sticking and making it easier to serve and clean up.
• 1 cup (4 oz.) Shredded Medium Cheddar Cheese: Cheddar cheese provides a classic cheesy flavor and a beautiful melted topping for the casserole. Medium cheddar offers a good balance of flavor and meltability. Shredding the cheese ensures it melts evenly and covers the casserole nicely. You can also use sharp cheddar for a more pronounced cheese flavor, or a blend of cheeses for added complexity.

Instructions

This chicken spaghetti casserole recipe is broken down into simple, manageable steps. Follow these instructions to create a delicious and freezer-friendly meal:

Step 1: Cook the Chicken

1. Prepare the Chicken: In a large Dutch oven or a heavy-bottomed pot, place the whole chicken. Sprinkle the chicken with 4 tablespoons of kosher salt. Add the bay leaf to the pot.
2. Add Water and Bring to a Boil: Pour enough water into the Dutch oven to fully cover the chicken. Ensure the chicken is submerged for even cooking. Place the Dutch oven over high heat and bring the water to a rolling boil.
3. Simmer the Chicken: Once boiling, reduce the heat to medium-low. Cover the Dutch oven tightly with a lid. Simmer gently for 1 hour, or until the chicken is cooked through and tender. The chicken is done when a meat thermometer inserted into the thickest part of the thigh reads 165°F (74°C). Simmering ensures the chicken cooks evenly and remains moist.
4. Remove Chicken and Reserve Broth: Carefully remove the cooked chicken from the Dutch oven using tongs or a slotted spoon. Place the chicken on a plate or cutting board to cool completely. It’s crucial to reserve the flavorful broth in the Dutch oven – this will be used to cook the spaghetti and adds depth of flavor to the casserole.
5. Cool the Chicken: Allow the chicken to cool completely, about 20 minutes. This makes it easier to handle and shred.
6. Discard Bay Leaf: Once the chicken is removed, locate and discard the bay leaf from the broth in the Dutch oven. The bay leaf has imparted its flavor and is no longer needed.
7. Skin, Bone, and Cut Chicken: Once the chicken is cool enough to handle, use your hands or a knife and fork to remove the skin and bones. Discard the skin and bones. Shred or cut the chicken meat into bite-sized pieces. Set the cooked chicken aside.

Step 2: Cook the Spaghetti

1. Preheat Oven: Preheat your oven to 350°F (175°C). This ensures the oven is ready when you assemble and bake the casserole later.
2. Reserve Chicken Broth: From the reserved chicken broth in the Dutch oven, remove and set aside ¼ cup of broth. This reserved broth will be used later to thin the cream of mushroom soup.
3. Bring Broth to a Boil: Return the Dutch oven with the remaining chicken broth to high heat. Bring the broth back to a rolling boil.
4. Cook Spaghetti: Break the uncooked spaghetti into thirds. This makes it easier to eat in the casserole. Add the broken spaghetti to the boiling chicken broth.
5. Cook Until Tender: Cook the spaghetti in the broth for 12 to 15 minutes, or until it is tender but still slightly firm to the bite (al dente). Cooking the spaghetti directly in the chicken broth infuses it with flavor.
6. Drain Spaghetti: Once the spaghetti is cooked, drain it well in a colander. Discard the remaining broth – the spaghetti has absorbed enough flavor.
7. Return Spaghetti to Dutch Oven: Return the drained spaghetti to the Dutch oven. Set aside.

Step 3: Prepare the Vegetable and Sauce Mixture

1. Melt Butter in Skillet: In a large skillet, melt 3 tablespoons of butter over medium-high heat. Allow the butter to melt completely and become slightly shimmering.
2. Sauté Vegetables: Add the chopped yellow onion, coarsely chopped green pepper, chopped celery ribs, and minced garlic to the melted butter in the skillet.
3. Sauté Until Tender: Sauté the vegetables for about 5 minutes, or until they are tender and fragrant. Stir frequently to prevent burning and ensure even cooking. Sautéing the vegetables softens them and develops their flavors, creating a delicious base for the casserole.
4. Add Sautéed Vegetables to Spaghetti: Pour the sautéed vegetable mixture from the skillet into the Dutch oven with the cooked spaghetti.

Step 4: Assemble the Casserole and Freeze (or Bake)

1. Prepare Soup Mixture: In a separate medium bowl, stir together the can of cream of mushroom soup and the ¼ cup of reserved chicken broth. Whisk until smooth and well combined. The reserved broth thins the soup to create a smoother sauce.
2. Add Soup Mixture to Spaghetti: Pour the cream of mushroom soup mixture into the Dutch oven with the spaghetti and vegetables. Stir well to combine and coat the spaghetti and vegetables evenly with the sauce.
3. Stir in Remaining Ingredients: Add the cooked chicken pieces, drained and chopped diced tomatoes, Worcestershire sauce, hot sauce, and freshly ground black pepper to the spaghetti mixture in the Dutch oven. Stir everything together thoroughly to ensure all ingredients are evenly distributed.
4. Season to Taste: Taste the mixture and add salt to taste, if needed. Remember that the chicken and broth were already salted, so taste before adding more.
5. Prepare Baking Dish: Lightly grease a 13- x 9-inch baking dish with vegetable cooking spray. This prevents the casserole from sticking and makes serving easier.
6. Spoon Mixture into Baking Dish: Spoon the chicken spaghetti mixture evenly into the prepared baking dish.
7. Top with Cheese: Sprinkle the shredded medium cheddar cheese evenly over the top of the casserole. Ensure the cheese covers the entire surface for a golden and cheesy crust.

To Freeze the Casserole (For Make-Ahead Meal):

1. Cool Completely: Allow the assembled casserole (before baking) to cool completely at room temperature. This is important before freezing to prevent condensation and ice crystals from forming.
2. Cover Tightly: Once cooled, cover the baking dish tightly with a double layer of plastic wrap, pressing it directly onto the surface of the casserole to minimize air exposure. Then, cover with a layer of heavy-duty aluminum foil. Ensure the casserole is completely sealed to prevent freezer burn and maintain quality.
3. Freeze: Place the covered casserole in the freezer. It can be frozen for up to 2 months. For best results, use within 1-2 months to maintain optimal flavor and texture.

To Bake the Casserole (If Not Freezing Immediately):

1. Bake: Bake the assembled casserole in the preheated oven at 350°F (175°C) for 15 to 20 minutes, or until the cheese is melted, bubbly, and lightly golden brown. The casserole is already cooked; baking is just to heat it through and melt the cheese.
2. Serve Hot: Once baked, remove the casserole from the oven and let it rest for a few minutes before serving. Serve hot and enjoy!

To Bake the Frozen Casserole:

1. Thaw Overnight: Remove the frozen casserole from the freezer and let it thaw overnight in the refrigerator. Thawing in the fridge is the safest method and ensures even heating during baking.
2. Preheat Oven: Preheat your oven to 350°F (175°C).
3. Bake: Remove the plastic wrap and foil from the thawed casserole. Bake in the preheated oven for 30 to 45 minutes, or until heated through and the cheese is melted and bubbly. Baking time may vary depending on your oven and how thoroughly thawed the casserole is. If the top starts to brown too quickly, you can loosely tent it with foil.
4. Serve Hot: Once heated through and bubbly, remove the casserole from the oven and let it rest for a few minutes before serving. Serve hot and enjoy your delicious make-ahead chicken spaghetti casserole!

Nutrition Facts (Estimated)

(Per Serving – Estimates based on recipe ingredients and typical serving sizes. Actual values may vary based on specific ingredients and portion sizes.)

• Servings: Approximately 8-10 servings
• Calories per Serving: Approximately 450-550 calories (This is an estimate and can vary. Factors influencing calorie count include chicken fat content, cheese amount, and portion size.)

Important Notes:

• These nutrition facts are estimates and should be used as a general guide. For precise nutritional information, use a nutrition calculator and input the exact brands and quantities of ingredients used.
• Serving sizes can greatly impact calorie counts. Adjust portion sizes to meet your dietary needs.
• This casserole contains chicken, pasta, vegetables, and dairy, providing a mix of protein, carbohydrates, and fats.

Preparation Time

This recipe is relatively straightforward, but involves a few steps. Here’s a breakdown of the estimated time involved:

• Prep Time (Active): Approximately 45-60 minutes (Includes chicken cooking, vegetable chopping, sauce preparation, and casserole assembly).
• Cook Time (Chicken): 1 hour
• Cook Time (Spaghetti): 12-15 minutes
• Bake Time (Fresh): 15-20 minutes
• Bake Time (Thawed Frozen): 30-45 minutes
• Total Time (Fresh Casserole): Approximately 2 hours – 2 hours 35 minutes
• Total Time (Frozen Casserole, including thawing): Approximately 2 hours 30 minutes (active prep and baking) + overnight thawing.

Make-Ahead Time Saver: The beauty of this recipe is that you can break up the preparation. Cook the chicken and prepare the casserole mixture ahead of time, then assemble and bake (or freeze) later. Freezing it is the ultimate time-saver for future meals.

How to Serve Chicken Spaghetti Casserole

Chicken spaghetti casserole is a hearty and satisfying meal on its own, but it pairs wonderfully with a variety of side dishes to create a complete and balanced dinner. Here are some serving suggestions:

• Classic Side Salad:
  • A simple green salad with a light vinaigrette dressing provides a refreshing contrast to the richness of the casserole.
  • Consider adding crisp lettuce, cucumbers, tomatoes, and carrots for texture and nutrients.
• Garlic Bread or Breadsticks:
  • Warm, crusty garlic bread or soft breadsticks are perfect for soaking up the creamy sauce of the casserole.
  • You can make your own or use store-bought for convenience.
• Steamed or Roasted Vegetables:
  • Steamed broccoli, green beans, or asparagus offer a healthy and vibrant side dish.
  • Roasted vegetables like carrots, Brussels sprouts, or bell peppers add a touch of sweetness and caramelized flavor.
• Coleslaw or Potato Salad:
  • For a Southern-inspired meal, serve the casserole with a side of creamy coleslaw or classic potato salad.
  • These cool and tangy sides complement the warm and savory casserole.
• Corn on the Cob or Creamed Corn:
  • Sweet corn on the cob or creamy corn are comforting and delicious accompaniments, especially during summer months.
• Fruit Salad or Fresh Fruit:
  • A light and refreshing fruit salad or a platter of fresh fruit like melon, berries, or grapes can provide a sweet ending to the meal and balance the richness of the casserole.
• Beverage Pairings:
  • Iced tea, lemonade, or a light-bodied white wine (like Pinot Grigio or Sauvignon Blanc) are refreshing beverage options.
  • For a comforting meal, warm milk or hot tea can also be enjoyable.

Serving Occasions:

• Weeknight Family Dinners: This casserole is perfect for busy weeknights as it’s easy to prepare ahead and bake.
• Potlucks and Gatherings: Chicken spaghetti casserole is a crowd-pleaser and travels well, making it ideal for potlucks, family reunions, and casual gatherings.
• Comfort Food Meals: When you’re craving something warm, comforting, and satisfying, this casserole hits the spot.
• Holiday Side Dish: While it can be a main course, a smaller portion of chicken spaghetti casserole can also be a delightful side dish for holiday meals or special occasions.

Additional Tips for the Best Chicken Spaghetti Casserole

To ensure your chicken spaghetti casserole is a success, here are some additional tips and tricks:

1. Don’t Overcook the Spaghetti: When cooking the spaghetti in the chicken broth, be sure to cook it al dente, meaning it should still have a slight firmness to the bite. It will continue to cook in the casserole during baking, and overcooked spaghetti can become mushy.
2. Sauté Vegetables Until Fragrant: Sautéing the onion, green pepper, celery, and garlic until they are tender and fragrant is crucial for developing the flavor base of the casserole. Don’t rush this step. Allow the vegetables to soften and release their aromas.
3. Use Quality Ingredients: While this recipe is simple, using good quality ingredients will make a noticeable difference in the final flavor. Opt for a good quality whole chicken, fresh vegetables, and flavorful canned tomatoes.
4. Adjust Seasonings to Taste: Seasoning is key to a delicious casserole. Taste the mixture before spooning it into the baking dish and adjust salt, pepper, and hot sauce to your preference. Remember that the cheese will also add saltiness.
5. Consider Topping Variations: While cheddar cheese is classic, feel free to experiment with other cheeses. Monterey Jack, mozzarella, or a blend of cheddar and Monterey Jack would all be delicious. You can also add a sprinkle of breadcrumbs or crushed crackers on top of the cheese for added texture and crunch before baking.

Frequently Asked Questions (FAQ) about Chicken Spaghetti Casserole

Here are some common questions and answers about making and freezing chicken spaghetti casserole:

Q1: Can I use pre-cooked chicken instead of cooking a whole chicken?

A: Yes, you can definitely use pre-cooked chicken to save time. Rotisserie chicken is an excellent option. Simply shred or chop about 4 cups of cooked chicken meat and add it to the casserole mixture. You will need to use chicken broth from a carton or bouillon cubes to cook the spaghetti if you skip cooking the whole chicken.

Q2: Can I substitute the cream of mushroom soup with another type of cream soup?

A: Yes, you can substitute cream of mushroom soup with other cream-based soups. Cream of chicken soup or cream of celery soup would work well and provide a similar creamy texture. You can also experiment with cream of cheddar or even a creamy tomato soup for different flavor profiles.

Q3: How long can I freeze chicken spaghetti casserole?

A: Properly frozen chicken spaghetti casserole can last for up to 2 months in the freezer without significant loss of quality. For best results, consume within 1-2 months. Ensure it is tightly wrapped to prevent freezer burn. Label and date the casserole before freezing for easy tracking.

Q4: Can I bake the casserole directly from frozen without thawing?

A: While it’s best to thaw the casserole overnight in the refrigerator for even baking, you can bake it from frozen in a pinch. However, it will require a significantly longer baking time. Bake at 350°F (175°C) for approximately 1.5 to 2 hours, or until heated through and bubbly. Cover with foil initially to prevent over-browning and remove the foil during the last 20-30 minutes to allow the cheese to melt and brown. Ensure the casserole is heated to an internal temperature of 165°F (74°C) throughout.

Q5: Can I add other vegetables to this casserole?

A: Absolutely! Feel free to customize this casserole by adding other vegetables. Sautéed mushrooms, diced carrots, peas, corn, or even spinach would be delicious additions. Add them to the skillet with the other vegetables and sauté until tender before incorporating them into the casserole mixture. Adding vegetables is a great way to boost the nutritional value and flavor of the dish.

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