Cheesy Baked Zucchini and Corn Casserole: A Comforting Summer Dish
Cheesy Baked Zucchini and Corn Casserole: A Comforting Summer Dish

Looking for a delicious and easy way to enjoy summer vegetables? This Cheesy Baked Zucchini and Corn Casserole is the perfect dish! Packed with fresh zucchini, sweet corn, and a creamy cheese topping, it’s a comforting and flavorful side dish that everyone will love. Whether you’re serving it at a family dinner or a summer gathering, this casserole is sure to be a hit.

Ingredients
- 4 cups zucchini, sliced
- 2 cups sweet corn kernels
- 1 cup shredded cheddar cheese
- 1/2 cup grated Parmesan cheese
- 1/2 cup sour cream
- 1/2 cup mayonnaise
- 1/2 cup breadcrumbs
- 1/4 cup chopped fresh parsley
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- Salt and pepper to taste
Step-by-Step Instructions
Step 1: Prepare the Vegetables
Preheat your oven to 375°F (190°C). Lightly grease a baking dish with butter or cooking spray. In a large bowl, combine the sliced zucchini and sweet corn kernels.
Step 2: Make the Cheese Mixture
In a separate bowl, mix together the shredded cheddar cheese, grated Parmesan cheese, sour cream, mayonnaise, garlic powder, onion powder, salt, and pepper. Stir until well combined.
Step 3: Combine and Layer
Pour the cheese mixture over the zucchini and corn. Gently fold everything together until the vegetables are evenly coated. Transfer the mixture to the prepared baking dish and spread it out evenly.
Step 4: Add the Topping
Sprinkle the breadcrumbs and chopped parsley evenly over the top of the casserole. This will give it a nice crispy texture.
Step 5: Bake to Perfection
Bake in the preheated oven for 25-30 minutes, or until the top is golden brown and the casserole is bubbly. Remove from the oven and let it cool for a few minutes before serving.
Expert Tips
- Use Fresh Ingredients: For the best flavor, use fresh zucchini and corn. If fresh corn isn’t available, frozen corn works well too.
- Add Extra Cheese: If you love cheese, feel free to add an extra layer of shredded cheese on top before baking.
- Make Ahead: You can prepare this casserole ahead of time and refrigerate it until you’re ready to bake. Just add a few extra minutes to the baking time if it’s cold.
- Customize: Add other vegetables like bell peppers or onions for extra flavor and texture.
FAQ
Can I use frozen zucchini?
Yes, you can use frozen zucchini, but make sure to thaw and drain it well to remove excess moisture.
Can I make this dish ahead of time?
Absolutely! Prepare the casserole as directed, cover it, and refrigerate for up to 24 hours before baking. You may need to bake it a bit longer if it’s cold.
What can I serve with this casserole?
This casserole pairs well with grilled chicken, steak, or even as a standalone vegetarian dish. For more ideas, check out our Ultimate Chicken Zucchini Bake.
Can I freeze leftovers?
Yes, you can freeze leftovers in an airtight container for up to 3 months. Reheat in the oven until warmed through.
For more delicious summer recipes, explore our Fresh Summer Tomato Peach Salad or Summer Peach Burrata Salad.

Cheesy Baked Zucchini and Corn Casserole: A Comforting Summer Dish
Ingredients
Method
- Preheat your oven to 375°F (190°C). Lightly grease a baking dish with butter or cooking spray. In a large bowl, combine the sliced zucchini and sweet corn kernels.
- In a separate bowl, mix together the shredded cheddar cheese, grated Parmesan cheese, sour cream, mayonnaise, garlic powder, onion powder, salt, and pepper. Stir until well combined.
- Pour the cheese mixture over the zucchini and corn. Gently fold everything together until the vegetables are evenly coated. Transfer the mixture to the prepared baking dish and spread it out evenly.
- Sprinkle the breadcrumbs and chopped parsley evenly over the top of the casserole. This will give it a nice crispy texture.
- Bake in the preheated oven for 25-30 minutes, or until the top is golden brown and the casserole is bubbly. Remove from the oven and let it cool for a few minutes before serving.






