Garden Zucchini Casserole

The aroma of sautéed zucchini mingles with the savory notes of cheese in the air, filling the kitchen with a comforting warmth. This Garden Zucchini Casserole is not only simple to prepare but also bakes to golden perfection in just 30 minutes. It works beautifully because the blend of fresh vegetables with creamy and cheesy ingredients creates a delightful texture and flavor.

This recipe is perfect for anyone looking for a nutritious side dish that celebrates the bounty of summer gardens. It’s ideal for family gatherings, potlucks, or a cozy dinner at home. For easy meal prep, you can assemble the casserole a day ahead and simply bake it when you’re ready to serve.

Why You’ll Love This Recipe

• The combination of cheese and zucchini creates a creamy, satisfying texture.
• It can be prepared in less than an hour, making it a quick dinner option.
• The recipe is versatile, allowing for various seasoning adjustments to suit your taste.
• It’s a great way to use up excess zucchini during the growing season.

What You’ll Need

Gather the following ingredients to make this delicious casserole.

For the Sauté

• 1/2 cup chopped onion
• 1 tablespoon olive oil or butter
• 1/2 teaspoon garlic powder
• 4 cups zucchini, sliced (about 2–3 medium)
• 1/2 teaspoon dried basil or Italian seasoning
• Salt & black pepper, to taste

For the Casserole

• 2 large eggs
• 1 cup shredded cheddar cheese
• 1/2 cup grated Parmesan cheese
• 1/2 cup sour cream or Greek yogurt
• 1 cup breadcrumbs (divided)
• 2 tablespoons melted butter (for topping)

Use Greek yogurt for a tangy taste.

Substitutions & Swaps

• Replace zucchini with summer squash.
• Use any shredded cheese you prefer.
• Swap butter for a dairy-free alternative.
• Greek yogurt can substitute sour cream.

How to Make It

Follow these easy steps to prepare your casserole.

Sauté

In a skillet, sauté onion and zucchini in olive oil or butter until they are tender. Season with garlic powder, basil, salt, and pepper to taste. Let cool slightly.

Mix

In a large bowl, beat the eggs. Stir in sour cream, cheddar cheese, Parmesan cheese, and 1/2 cup of breadcrumbs. Fold in the zucchini mixture until well combined.

Pour

Pour the mixture into a greased 8×8-inch baking dish, spreading it evenly across the surface.

Top

Mix the remaining breadcrumbs with melted butter, then sprinkle the mixture over the top of the casserole.

Bake

Bake uncovered in the preheated oven for 25–30 minutes, or until the top is golden and the casserole is set. Let it rest for 5–10 minutes before serving.

How to Store It

Fridge: Store in an airtight container for up to 3 days.
Freezer: No, as the texture may change.
Reheat: Bake at 350°F (175°C) for 15 minutes.

Tips for Best Results

• Try varying the herbs for a unique flavor twist each time.
• Make sure to slice the zucchini uniformly for even cooking.
• Allow the casserole to sit before serving for better slicing.
• For extra crunch, consider adding nuts or seeds in the topping.

Serving Suggestions

• Pair with a fresh garden salad for a light meal.
• Serve as a side dish with grilled meats.
• Enjoy alongside crusty bread for a comforting dinner.