Name: Easy Zucchini Casserole with Ground Beef Recipe
Ingredients: 1 pound Ground Beef: Ground beef forms the hearty base of this casserole, providing protein and a rich, savory flavor. When choosing ground beef, you have options in terms of lean percentage. For this recipe, I recommend using 80/20 ground beef. The slightly higher fat content contributes to a more flavorful and moist casserole. However, if you prefer leaner options, 85/15 or even 90/10 ground beef will work just fine. Just be mindful that leaner beef might require a touch more olive oil or cooking liquid to prevent dryness. For those looking for alternatives, ground turkey or ground chicken can be substituted for ground beef. These options will result in a lighter flavor profile but are still delicious and lower in fat. For a vegetarian or vegan option, consider using plant-based ground beef alternatives, lentils, or crumbled firm tofu, ensuring to adjust seasonings accordingly to maintain a savory flavor profile. Remember to drain off any excess fat after browning the ground beef, regardless of the type you choose.; 1 large Onion, chopped: Onion is a foundational aromatic that adds depth and sweetness to the casserole. When sautéed, onions release their natural sugars and create a savory base for the ground beef and zucchini. Yellow or white onions are excellent choices for this recipe. They become sweet and mild when cooked, complementing the other flavors without overpowering them. If you prefer a milder onion flavor, you can use shallots, which are sweeter and more delicate. For a stronger, more pungent onion flavor, you could use red onions, but they might be a bit more assertive in this dish. Make sure to chop the onion into uniform pieces so they cook evenly and soften properly during the sautéing process. Sautéing the onions until they are translucent and softened is key to releasing their flavor and preventing them from being crunchy in the final casserole.; 2 cloves Garlic, minced: Garlic is another essential aromatic that adds a pungent and savory note to the casserole. Fresh garlic is always preferred for its robust flavor. Minced garlic disperses evenly throughout the ground beef mixture, infusing it with its characteristic taste. If you don’t have fresh garlic on hand, you can use garlic powder as a substitute. About ½ to 1 teaspoon of garlic powder is equivalent to two cloves of fresh garlic. However, fresh garlic provides a brighter and more complex flavor. When mincing garlic, aim for small, even pieces to prevent large chunks of garlic from overpowering the dish. Garlic should be added to the pan after the onions have softened, as it cooks faster and can burn easily. Sautéing garlic briefly until fragrant is all it takes to release its flavor.; 2 medium Zucchini, diced: Zucchini is the star vegetable of this casserole, providing a mild, slightly sweet flavor and a tender texture. It’s also a low-carb and nutrient-rich vegetable, making this casserole a healthier option. Medium-sized zucchini are ideal for this recipe. Look for zucchini that are firm and have smooth, unblemished skin. Smaller zucchini tend to be less watery and have fewer seeds. Dicing the zucchini into roughly uniform pieces ensures even cooking and a consistent texture in the casserole. There is no need to peel zucchini for this recipe, as the skin is thin and edible, adding a bit of color and fiber. If your zucchini is very large or has large seeds, you might want to scoop out the seeds before dicing. Some people prefer to salt zucchini and let it drain for a bit to remove excess moisture, but for this recipe, it’s generally not necessary as the baking process will help to cook off excess liquid.; 1 (14.5 ounce) can Diced Tomatoes, undrained: Diced tomatoes add moisture, acidity, and a touch of sweetness to the casserole. Undrained diced tomatoes provide both the tomato solids and the juice, contributing to the saucy consistency of the dish. You can use regular diced tomatoes or fire-roasted diced tomatoes for a slightly smoky flavor. Canned diced tomatoes are a convenient and readily available option. Ensure you are using diced tomatoes and not tomato sauce or tomato paste, as these have different textures and flavor profiles. If you prefer fresh tomatoes, you can use about 2-3 medium diced tomatoes, but canned tomatoes often have a richer and more consistent flavor, especially out of season. The acidity of the tomatoes helps to balance the richness of the ground beef and cheese.; 1 teaspoon Dried Oregano: Dried oregano is a classic Mediterranean herb that adds a warm, slightly peppery, and aromatic flavor to the casserole. It complements the ground beef, zucchini, and tomatoes beautifully, creating a savory and comforting flavor profile. Dried oregano is readily available and has a longer shelf life than fresh oregano. If you prefer fresh oregano, you can use about 1 tablespoon of chopped fresh oregano as a substitute. Dried oregano is quite potent, so a teaspoon is usually sufficient to flavor the entire casserole. You can adjust the amount to your preference, but start with a teaspoon and taste before adding more. Other herbs that would complement this dish include dried basil, thyme, or Italian seasoning.; ½ teaspoon Salt: Salt is a fundamental seasoning that enhances the flavors of all the other ingredients in the casserole. It’s crucial for bringing out the savory notes and preventing the dish from tasting bland. Table salt or sea salt can be used. Start with ½ teaspoon and adjust to taste. It’s always better to start with less salt and add more if needed, as you can always add more salt but it’s difficult to remove it once it’s added. The amount of salt may need to be adjusted depending on your personal preference and the saltiness of other ingredients, such as the cheese.; ¼ teaspoon Black Pepper: Black pepper adds a touch of spice and enhances the savory flavors of the casserole. Freshly ground black pepper is preferred for its brighter and more aromatic flavor compared to pre-ground pepper. Start with ¼ teaspoon and adjust to taste. Like salt, pepper is essential for seasoning and should be adjusted to your preference. You can also add a pinch of red pepper flakes for a bit of heat if you like a spicier casserole.; 1 cup Shredded Mozzarella Cheese: Mozzarella cheese provides a melty, cheesy topping that binds the casserole together and adds a creamy, mild flavor. Shredded mozzarella cheese is convenient and melts beautifully. Part-skim mozzarella is a good option as it melts well and is slightly lower in fat than whole milk mozzarella. You can also use pre-shredded mozzarella, but freshly shredded mozzarella tends to melt more smoothly as it doesn’t contain cellulose to prevent clumping. Other cheeses that would work well in this casserole include cheddar cheese, Monterey Jack cheese, provolone cheese, or a blend of Italian cheeses. For a sharper flavor, consider using a blend of mozzarella and provolone or cheddar. The cheese is typically added during the last part of baking to create a golden brown and bubbly topping.; Optional: 2 tablespoons Grated Parmesan Cheese: Parmesan cheese is an optional addition that adds a salty, nutty, and umami flavor to the cheesy topping. Grated Parmesan cheese provides a more intense flavor than mozzarella and adds a nice textural contrast when baked. It also helps to create a golden brown crust on top of the casserole. If you choose to use Parmesan cheese, sprinkle it over the mozzarella cheese before baking. Freshly grated Parmesan cheese is preferred for its superior flavor compared to pre-grated Parmesan. However, pre-grated Parmesan is a convenient option. If you are watching your sodium intake, you may want to reduce or omit the Parmesan cheese as it is higher in sodium than mozzarella.

Ingredients

Scale

1 pound Ground Beef: Ground beef forms the hearty base of this casserole, providing protein and a rich, savory flavor. When choosing ground beef, you have options in terms of lean percentage. For this recipe, I recommend using 80/20 ground beef. The slightly higher fat content contributes to a more flavorful and moist casserole. However, if you prefer leaner options, 85/15 or even 90/10 ground beef will work just fine. Just be mindful that leaner beef might require a touch more olive oil or cooking liquid to prevent dryness. For those looking for alternatives, ground turkey or ground chicken can be substituted for ground beef. These options will result in a lighter flavor profile but are still delicious and lower in fat. For a vegetarian or vegan option, consider using plant-based ground beef alternatives, lentils, or crumbled firm tofu, ensuring to adjust seasonings accordingly to maintain a savory flavor profile. Remember to drain off any excess fat after browning the ground beef, regardless of the type you choose.

1 large Onion, chopped: Onion is a foundational aromatic that adds depth and sweetness to the casserole. When sautéed, onions release their natural sugars and create a savory base for the ground beef and zucchini. Yellow or white onions are excellent choices for this recipe. They become sweet and mild when cooked, complementing the other flavors without overpowering them. If you prefer a milder onion flavor, you can use shallots, which are sweeter and more delicate. For a stronger, more pungent onion flavor, you could use red onions, but they might be a bit more assertive in this dish. Make sure to chop the onion into uniform pieces so they cook evenly and soften properly during the sautéing process. Sautéing the onions until they are translucent and softened is key to releasing their flavor and preventing them from being crunchy in the final casserole.

2 cloves Garlic, minced: Garlic is another essential aromatic that adds a pungent and savory note to the casserole. Fresh garlic is always preferred for its robust flavor. Minced garlic disperses evenly throughout the ground beef mixture, infusing it with its characteristic taste. If you don’t have fresh garlic on hand, you can use garlic powder as a substitute. About ½ to 1 teaspoon of garlic powder is equivalent to two cloves of fresh garlic. However, fresh garlic provides a brighter and more complex flavor. When mincing garlic, aim for small, even pieces to prevent large chunks of garlic from overpowering the dish. Garlic should be added to the pan after the onions have softened, as it cooks faster and can burn easily. Sautéing garlic briefly until fragrant is all it takes to release its flavor.

2 medium Zucchini, diced: Zucchini is the star vegetable of this casserole, providing a mild, slightly sweet flavor and a tender texture. It’s also a low-carb and nutrient-rich vegetable, making this casserole a healthier option. Medium-sized zucchini are ideal for this recipe. Look for zucchini that are firm and have smooth, unblemished skin. Smaller zucchini tend to be less watery and have fewer seeds. Dicing the zucchini into roughly uniform pieces ensures even cooking and a consistent texture in the casserole. There is no need to peel zucchini for this recipe, as the skin is thin and edible, adding a bit of color and fiber. If your zucchini is very large or has large seeds, you might want to scoop out the seeds before dicing. Some people prefer to salt zucchini and let it drain for a bit to remove excess moisture, but for this recipe, it’s generally not necessary as the baking process will help to cook off excess liquid.

1 (14.5 ounce) can Diced Tomatoes, undrained: Diced tomatoes add moisture, acidity, and a touch of sweetness to the casserole. Undrained diced tomatoes provide both the tomato solids and the juice, contributing to the saucy consistency of the dish. You can use regular diced tomatoes or fire-roasted diced tomatoes for a slightly smoky flavor. Canned diced tomatoes are a convenient and readily available option. Ensure you are using diced tomatoes and not tomato sauce or tomato paste, as these have different textures and flavor profiles. If you prefer fresh tomatoes, you can use about 2–3 medium diced tomatoes, but canned tomatoes often have a richer and more consistent flavor, especially out of season. The acidity of the tomatoes helps to balance the richness of the ground beef and cheese.

1 teaspoon Dried Oregano: Dried oregano is a classic Mediterranean herb that adds a warm, slightly peppery, and aromatic flavor to the casserole. It complements the ground beef, zucchini, and tomatoes beautifully, creating a savory and comforting flavor profile. Dried oregano is readily available and has a longer shelf life than fresh oregano. If you prefer fresh oregano, you can use about 1 tablespoon of chopped fresh oregano as a substitute. Dried oregano is quite potent, so a teaspoon is usually sufficient to flavor the entire casserole. You can adjust the amount to your preference, but start with a teaspoon and taste before adding more. Other herbs that would complement this dish include dried basil, thyme, or Italian seasoning.

½ teaspoon Salt: Salt is a fundamental seasoning that enhances the flavors of all the other ingredients in the casserole. It’s crucial for bringing out the savory notes and preventing the dish from tasting bland. Table salt or sea salt can be used. Start with ½ teaspoon and adjust to taste. It’s always better to start with less salt and add more if needed, as you can always add more salt but it’s difficult to remove it once it’s added. The amount of salt may need to be adjusted depending on your personal preference and the saltiness of other ingredients, such as the cheese.

¼ teaspoon Black Pepper: Black pepper adds a touch of spice and enhances the savory flavors of the casserole. Freshly ground black pepper is preferred for its brighter and more aromatic flavor compared to pre-ground pepper. Start with ¼ teaspoon and adjust to taste. Like salt, pepper is essential for seasoning and should be adjusted to your preference. You can also add a pinch of red pepper flakes for a bit of heat if you like a spicier casserole.

1 cup Shredded Mozzarella Cheese: Mozzarella cheese provides a melty, cheesy topping that binds the casserole together and adds a creamy, mild flavor. Shredded mozzarella cheese is convenient and melts beautifully. Part-skim mozzarella is a good option as it melts well and is slightly lower in fat than whole milk mozzarella. You can also use pre-shredded mozzarella, but freshly shredded mozzarella tends to melt more smoothly as it doesn’t contain cellulose to prevent clumping. Other cheeses that would work well in this casserole include cheddar cheese, Monterey Jack cheese, provolone cheese, or a blend of Italian cheeses. For a sharper flavor, consider using a blend of mozzarella and provolone or cheddar. The cheese is typically added during the last part of baking to create a golden brown and bubbly topping.

Optional: 2 tablespoons Grated Parmesan Cheese: Parmesan cheese is an optional addition that adds a salty, nutty, and umami flavor to the cheesy topping. Grated Parmesan cheese provides a more intense flavor than mozzarella and adds a nice textural contrast when baked. It also helps to create a golden brown crust on top of the casserole. If you choose to use Parmesan cheese, sprinkle it over the mozzarella cheese before baking. Freshly grated Parmesan cheese is preferred for its superior flavor compared to pre-grated Parmesan. However, pre-grated Parmesan is a convenient option. If you are watching your sodium intake, you may want to reduce or omit the Parmesan cheese as it is higher in sodium than mozzarella.

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Instructions

Preheat Oven and Prepare Baking Dish: Begin by preheating your oven to 375°F (190°C). Preheating the oven ensures that the casserole cooks evenly and at the correct temperature from the start. While the oven is preheating, prepare a 9×13 inch baking dish. Grease the baking dish lightly with cooking spray or a bit of olive oil. This will prevent the casserole from sticking to the dish and make it easier to serve and clean up later. A 9×13 inch baking dish is the ideal size for this recipe, providing ample space for the casserole to cook evenly and serve a family. If you don’t have a 9×13 inch dish, you can use a similar sized casserole dish, but cooking times may need to be adjusted slightly.

Brown Ground Beef and Sauté Aromatics: Place a large skillet over medium-high heat. Add the ground beef to the hot skillet and cook, breaking it apart with a spoon or spatula, until it is browned and no longer pink. Browning the ground beef develops its flavor and ensures it is cooked through. Once the beef is browned, drain off any excess grease from the skillet. This step is important to prevent the casserole from becoming greasy. After draining the grease, return the skillet to medium heat. Add the chopped onion to the skillet with the ground beef. Sauté the onion for about 5-7 minutes, or until it becomes softened and translucent. Sautéing the onion softens it and releases its sweetness, which is crucial for the flavor base of the casserole. Next, add the minced garlic to the skillet. Sauté the garlic for about 1 minute more, or until it becomes fragrant. Be careful not to burn the garlic, as burnt garlic can taste bitter. Sautéing the garlic briefly until fragrant releases its aromatic oils and enhances the overall flavor of the dish.

Add Tomatoes, Zucchini, and Seasonings: To the skillet with the ground beef, onions, and garlic, add the can of diced tomatoes (undrained). Stir in the diced zucchini, dried oregano, salt, and black pepper. Mix everything together well to combine all the ingredients. The diced tomatoes add moisture and acidity to the mixture, while the zucchini provides the main vegetable component. The oregano, salt, and pepper season the casserole and enhance the flavors of the beef, zucchini, and tomatoes. Bring the mixture to a simmer over medium heat. Simmering the mixture for a few minutes helps to soften the zucchini slightly and allows the flavors to meld together. Simmer for about 5-7 minutes, stirring occasionally. You don’t need to cook the zucchini completely at this stage, as it will continue to cook in the oven.

Assemble and Bake the Casserole: Pour the ground beef and zucchini mixture into the prepared 9×13 inch baking dish, spreading it evenly across the bottom of the dish. Sprinkle the shredded mozzarella cheese evenly over the top of the mixture. If using, sprinkle the grated Parmesan cheese over the mozzarella cheese. The cheese topping will melt and create a golden brown, bubbly crust on top of the casserole. Place the baking dish in the preheated oven and bake for 20-25 minutes, or until the cheese is melted, bubbly, and lightly golden brown. The baking time may vary slightly depending on your oven, so keep an eye on the casserole and check for doneness. The casserole is ready when it is heated through, the cheese is melted and golden, and the zucchini is tender.

Rest and Serve: Once the casserole is baked, remove it from the oven and let it rest for about 5-10 minutes before serving. Resting allows the casserole to set slightly and makes it easier to serve. It also helps to prevent the cheese from being too runny. After resting, the Easy Zucchini Casserole with Ground Beef is ready to be served. Serve it hot as a main course. Garnish with fresh parsley or basil, if desired, for a touch of freshness and visual appeal.

Nutrition

Serving Size: One Normal Portion
Calories: 350-400 kcal
Sodium: 500-600mg
Fat: 25-30g
Saturated Fat: 10-12g
Carbohydrates: 10-12g
Fiber: 2-3g
Protein: 25-30g
Cholesterol: 100-120mg