Heavenly Baked Zucchini and Corn Casserole: A Cheesy Summer Delight
Heavenly Baked Zucchini and Corn Casserole: A Cheesy Summer Delight

Indulge in the flavors of summer with this Baked Zucchini and Corn Casserole. This dish is a celebration of fresh garden vegetables, creamy cheese, and a golden crust that will have everyone asking for seconds. Perfect for family dinners, potlucks, or a cozy night in, this casserole is easy to prepare and packed with flavor.
If you love cheesy, comforting dishes, you might also enjoy this Easy Cheesy Zucchini Bake or this Easy Cheesy Zucchini Corn Tomato Bake with Golden Parmesan Crust.
Ingredients

- 4 cups zucchini, thinly sliced
- 2 cups sweet corn kernels (fresh or frozen)
- 1 cup shredded cheddar cheese
- 1/2 cup shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
- 1/2 cup sour cream
- 1/2 cup mayonnaise
- 1/4 cup chopped fresh parsley
- 1/4 cup chopped green onions
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1/2 teaspoon salt
- 1/2 teaspoon black pepper
- 1/2 cup breadcrumbs (for topping)
- 2 tablespoons melted butter (for topping)
Step-by-Step Instructions
- Preheat the Oven: Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter or cooking spray.
- Prepare the Vegetables: In a large bowl, combine the sliced zucchini and corn kernels. Mix well to ensure even distribution.
- Make the Cheese Mixture: In a separate bowl, mix together the shredded cheddar cheese, mozzarella cheese, Parmesan cheese, sour cream, mayonnaise, parsley, green onions, garlic powder, onion powder, salt, and black pepper. Stir until the mixture is smooth and well combined.
- Combine Ingredients: Pour the cheese mixture over the zucchini and corn. Gently fold everything together until the vegetables are evenly coated with the cheese mixture.
- Assemble the Casserole: Transfer the mixture to the prepared baking dish, spreading it out evenly. In a small bowl, mix the breadcrumbs with the melted butter and sprinkle this mixture over the top of the casserole.
- Bake: Place the casserole in the preheated oven and bake for 25-30 minutes, or until the top is golden brown and the casserole is bubbly.
- Serve: Remove from the oven and let it cool for a few minutes before serving. Garnish with additional chopped parsley or green onions if desired.
Expert Tips
- Use Fresh Vegetables: For the best flavor, use fresh zucchini and corn. If fresh corn isn’t available, frozen corn works well too.
- Add a Crunchy Topping: For extra texture, consider adding a layer of crushed crackers or panko breadcrumbs mixed with melted butter on top before baking.
- Make Ahead: You can assemble the casserole ahead of time and refrigerate it until ready to bake. Just add a few extra minutes to the baking time if baking straight from the fridge.
- Customize the Cheese: Feel free to experiment with different types of cheese. A mix of cheddar, mozzarella, and Parmesan works beautifully, but you can also try adding Gruyère or Monterey Jack for a different flavor profile.
FAQ
Can I use frozen zucchini?
While fresh zucchini is recommended for the best texture, you can use frozen zucchini. Make sure to thaw and drain it well to remove excess moisture before using.
How do I store leftovers?
Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven or microwave before serving.
Can I add other vegetables to this casserole?
Absolutely! This casserole is very versatile. Consider adding diced bell peppers, tomatoes, or even spinach for extra flavor and nutrition. For more inspiration, check out this Baked Zucchini, Spinach, and Feta Casserole.
Enjoy this comforting and flavorful Baked Zucchini and Corn Casserole as a side dish or a main course. It’s a perfect way to celebrate the bounty of summer vegetables!

Heavenly Baked Zucchini and Corn Casserole: A Cheesy Summer Delight
Ingredients
Method
- Preheat the oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter or cooking spray.
- In a large bowl, combine the sliced zucchini and corn kernels. Mix well to ensure even distribution.
- In a separate bowl, mix together the shredded cheddar cheese, mozzarella cheese, Parmesan cheese, sour cream, mayonnaise, parsley, green onions, garlic powder, onion powder, salt, and black pepper. Stir until the mixture is smooth and well combined.
- Pour the cheese mixture over the zucchini and corn. Gently fold everything together until the vegetables are evenly coated with the cheese mixture.
- Transfer the mixture to the prepared baking dish, spreading it out evenly. In a small bowl, mix the breadcrumbs with the melted butter and sprinkle this mixture over the top of the casserole.
- Place the casserole in the preheated oven and bake 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. Garnish with additional chopped parsley or green onions if desired.






