Description
This Baked Herb and Cheese Squash Casserole is a comforting, cheesy side dish featuring tender yellow squash or zucchini, sautéed with onions and blended into a creamy mixture with sour cream, mayonnaise, and flavorful herbs. Topped with a crispy breadcrumb and Parmesan crust, it’s baked to golden perfection and garnished with fresh parsley. Perfect for summer gatherings or as a savory complement to your favorite roasted or grilled meats.
Ingredients
Scale
Vegetables
- 4 cups yellow squash or zucchini, sliced into thin rounds
- 1 small onion, diced
Seasonings & Herbs
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon dried Italian herbs (or a mix of thyme, oregano, and basil)
- 2 tablespoons fresh parsley, chopped (for garnish)
Dairy & Condiments
- 1/2 cup sour cream
- 1/2 cup mayonnaise
- 1 cup shredded cheddar cheese
- 1/2 cup grated Parmesan cheese
- 2 tablespoons unsalted butter, melted
Other
- 2 tablespoons olive oil
- 1 cup breadcrumbs or crushed Ritz crackers
Instructions
- Preheat and Prepare: Preheat your oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish to prevent sticking and ensure easy cleanup.
- Sauté Vegetables: Heat olive oil in a skillet over medium heat. Add the sliced squash and diced onion, then season with salt and pepper. Sauté for 8 to 10 minutes until the vegetables soften. Drain any excess liquid to keep the casserole from becoming watery.
- Mix Creamy Base: In a large bowl, combine sour cream, mayonnaise, garlic powder, dried Italian herbs, shredded cheddar cheese, and grated Parmesan cheese. Stir thoroughly to create a flavorful creamy mixture.
- Combine with Vegetables: Add the cooked squash and onion mixture into the creamy bowl and gently fold together until well coated, ensuring an even blend of flavors.
- Assemble Casserole: Spread the squash mixture evenly into the prepared baking dish, creating a uniform layer for baking.
- Prepare Topping: In a small bowl, mix the breadcrumbs or crushed crackers with melted butter until the crumbs are evenly coated. Sprinkle this mixture evenly over the casserole to form a golden, crispy crust.
- Bake: Place the casserole in the preheated oven and bake uncovered for 25 to 30 minutes or until the top is bubbly and golden brown, indicating it’s cooked through and nicely crisped.
- Garnish and Serve: Remove from the oven and sprinkle fresh chopped parsley on top for color and fresh flavor before serving hot.
Notes
- For extra richness and a cheesier topping, add 1/2 cup mozzarella cheese mixed into the breadcrumb topping before baking.
- This casserole can be prepared ahead of time and baked just before serving, making it ideal for busy days or entertaining.
- Pairs beautifully as a side dish with roasted chicken, turkey, or grilled meats for a hearty meal.
