Step 1: Preheat Oven and Prepare Baking Dish
- Preheat your oven to 375°F (190°C).
- Grease a medium-sized baking dish with butter or olive oil.
Step 2: Sauté Vegetables
- Heat olive oil in a large skillet over medium heat.
- Add the onion and garlic, sautéing until they start to soften, about 2-3 minutes.
- Add the sliced zucchini and yellow squash to the skillet. Season with salt, pepper, and thyme. Cook, stirring occasionally, until just tender, about 5-7 minutes.
Step 3: Assemble the Gratin
- In a mixing bowl, combine the sautéed vegetables with heavy cream and half of the grated cheese. Adjust the seasoning with salt and pepper if needed.
- Transfer the mixture to the prepared baking dish, spreading it out evenly.
- Sprinkle the remaining grated cheese over the top, followed by the Parmesan cheese.
- Finish by evenly sprinkling breadcrumbs over the cheese layer for a crispy topping.
Step 4: Bake
- Bake in the preheated oven for about 25-30 minutes, or until the top is golden brown and the gratin is bubbling around the edges.
- For a more golden top, you can broil the gratin for an additional 2-3 minutes, watching closely to prevent burning.
Step 5: Serve
- Let the gratin cool for a few minutes before serving. This rest period allows the gratin to set, making it easier to slice.
- Garnish with additional fresh thyme leaves if desired.
Tips:
- For a healthier version, you can substitute heavy cream with a lighter cream or a mix of milk and a tablespoon of flour to thicken.
- Feel free to add other vegetables you have on hand, such as bell peppers or tomatoes, to introduce more flavors and textures.
- This dish pairs wonderfully with grilled meats or can be enjoyed on its own with a fresh green salad for a lighter meal.
Zucchini and yellow squash gratin is a versatile dish that beautifully combines the flavors of summer vegetables with the richness of cheese and cream. It’s sure to become a favorite at your table!