Ingredients
- Fresh Zucchini: The star of the show! You’ll need approximately 2 pounds of fresh zucchini. Look for firm, dark green zucchini with smooth skin. Smaller to medium-sized zucchini tend to have fewer seeds and a sweeter flavor. For this recipe, we’ll be slicing the zucchini, so uniform sizes are ideal for even cooking. Fresh zucchini provides a mild, slightly sweet flavor that perfectly complements the richness of the cheese and cream. It’s also packed with nutrients, making this gratin a surprisingly wholesome side dish.
- Heavy Cream: This is what gives our gratin its luxuriously creamy texture. Don’t skimp on the heavy cream; it’s essential for creating that rich, velvety sauce that coats the zucchini beautifully. The high fat content of heavy cream ensures a smooth, non-grainy sauce that will bake to a golden perfection. If you’re looking for a slightly lighter option, you could experiment with half-and-half, but be aware that the sauce might be less thick and rich. For the classic, decadent gratin experience, heavy cream is the way to go.
- Grated Parmesan Cheese: Parmesan cheese is the key to that savory, umami-rich flavor in our gratin. We’ll use it both in the creamy sauce and as a topping for that irresistible golden crust. Freshly grated Parmesan is highly recommended for its superior flavor and melting quality compared to pre-shredded options. The salty, nutty notes of Parmesan cheese perfectly balance the sweetness of the zucchini and the richness of the cream. Its firm texture also helps create a beautiful, crispy topping when baked.
- Garlic: A few cloves of fresh garlic are essential for adding depth and aromatic complexity to the gratin. Garlic infuses the cream sauce with a savory warmth that complements the other flavors beautifully. Freshly minced garlic is always best for its pungent flavor and aroma. You can adjust the amount of garlic to your preference – if you’re a garlic lover, feel free to add an extra clove or two!
- Butter: Butter is used to sauté the garlic and create a flavorful base for the cream sauce. It also adds richness and helps to prevent the garlic from burning. Unsalted butter is generally preferred in cooking so you can control the overall saltiness of the dish. The buttery flavor adds another layer of deliciousness to the gratin, enhancing both the sauce and the overall taste.
- All-Purpose Flour: A small amount of all-purpose flour is used as a thickening agent for the cream sauce. It helps to create a smooth, creamy consistency that coats the zucchini evenly. Be sure to whisk the flour into the melted butter thoroughly to avoid any lumps in the sauce. The flour ensures that the sauce is thick enough to cling to the zucchini and not become watery during baking.
- Dried Thyme: Dried thyme adds a subtle earthy and herbaceous note to the gratin. Thyme pairs wonderfully with zucchini, garlic, and cheese, adding a layer of aromatic complexity. You can also use fresh thyme if you have it on hand – simply use about three times the amount of fresh thyme as dried. Other herbs like rosemary or oregano could also be used, but thyme is a classic and delicious choice for zucchini gratin.
- Salt and Black Pepper: Essential seasonings to enhance all the flavors in the gratin. Salt brings out the natural flavors of the zucchini, cheese, and cream, while black pepper adds a touch of warmth and spice. Season generously, tasting as you go, to ensure the gratin is perfectly seasoned to your liking. Freshly ground black pepper is always preferred for its bolder flavor.
Instructions
- Preheat Your Oven and Prepare the Baking Dish: Begin by preheating your oven to 375°F (190°C). This temperature is ideal for baking the gratin to golden perfection without burning the top. While the oven is preheating, lightly grease a 9×13 inch baking dish with butter or cooking spray. This will prevent the gratin from sticking to the dish and ensure easy serving. A 9×13 inch dish is the perfect size to accommodate the amount of zucchini and sauce in this recipe, allowing for even baking.
- Prepare the Zucchini: Wash and trim the ends of the zucchini. Slice the zucchini into ¼-inch thick rounds. Uniformly sized slices will ensure even cooking. You can use a mandoline for perfectly even slices if you have one, but a sharp knife works just as well. Set the zucchini slices aside. There’s no need to salt the zucchini beforehand, as we want to retain as much moisture as possible for a tender gratin.
- Sauté the Garlic in Butter: In a large skillet over medium heat, melt the butter. Once melted, add the minced garlic and sauté for about 1-2 minutes, or until fragrant. Be careful not to brown or burn the garlic, as this will make it bitter. Sautéing the garlic in butter releases its aromatic oils and creates a flavorful base for the creamy sauce. The fragrant garlic will infuse the entire dish with its savory essence.
- Make the Cream Sauce: Sprinkle the all-purpose flour over the sautéed garlic and butter in the skillet. Whisk constantly for about 1 minute to cook the flour and create a roux. This step is crucial for thickening the sauce and preventing any floury taste. Slowly pour in the heavy cream, whisking continuously to ensure a smooth sauce. Continue whisking until the sauce thickens slightly and comes to a gentle simmer. This will take about 3-5 minutes. The sauce should be thick enough to coat the back of a spoon.
- Season the Cream Sauce: Remove the skillet from the heat and stir in half of the grated Parmesan cheese (about ½ cup), dried thyme, salt, and black pepper. Taste the sauce and adjust seasonings as needed. The Parmesan cheese will melt into the sauce, adding richness and flavor. The thyme, salt, and pepper enhance the overall taste profile, creating a well-balanced and flavorful sauce.
- Assemble the Gratin: Arrange half of the zucchini slices in a single layer in the prepared baking dish. Pour half of the cream sauce evenly over the zucchini. Repeat layers with the remaining zucchini slices and cream sauce. Ensure that the zucchini is evenly coated with the sauce. Layering the zucchini and sauce ensures that every slice is infused with the creamy, cheesy goodness.
- Top with Cheese and Bake: Sprinkle the remaining Parmesan cheese (about ½ cup) evenly over the top of the gratin. This final layer of cheese will create a beautiful golden brown and crispy crust during baking. Place the baking dish in the preheated oven and bake for 25-30 minutes, or until the gratin is bubbly and the top is golden brown. The baking time may vary slightly depending on your oven, so keep an eye on it and bake until it reaches the desired golden color and the zucchini is tender.
- Rest and Serve: Once baked, remove the Zucchini Gratin from the oven and let it rest for about 5-10 minutes before serving. This resting time allows the sauce to slightly thicken and the flavors to meld together. Serve hot and enjoy the creamy, cheesy, and utterly delicious Zucchini Gratin! Garnish with a sprinkle of fresh thyme or parsley, if desired, for an extra touch of freshness and visual appeal.
Nutrition
- Serving Size: one normal portion
- Calories: 350-450