Easy Zucchini Casserole Recipe

Are you looking for a comforting yet healthy dinner that ticks all the boxes for flavor, nutrition, and ease of preparation? This easy zucchini casserole recipe is just the thing for you! Loaded with fresh vegetables and a cheesy crust, this dish is the perfect blend of summer produce with warm, hearty flavors, offering the ultimate comfort food experience.
I remember the first time I made this zucchini casserole for a family gathering. It was a chilly fall evening, and I wanted something that felt cozy yet nutritious. My grandmother, who has always inspired my love for vegetables, would be proud as she watched everyone go back for seconds. This recipe has quickly become an autumn staple at our table, forever linked with memories of laughter and togetherness.
Why You’ll Love This Recipe
The magic of this casserole lies in its simplicity. You’ll love this recipe because it’s not only delicious but incredibly versatile. You can prepare it with minimal ingredients, all of which are likely already in your kitchen. Plus, it’s a fantastic way to use up abundant zucchini from your garden. Whether you’re cooking for a weekday family dinner or a potluck, this dish delivers on taste and presentation.
Ingredients Notes
For this recipe, freshness is key. Choose medium-sized zucchinis that are firm to the touch. Yellow squash can be a vibrant alternative, adding a touch more color. While mozzarella provides a classic melted cheese topping, you could substitute with cheddar for a sharper taste.
Recipe Steps
Step 1
Preheat your oven to 375°F (190°C). Grease a casserole dish lightly with olive oil or cooking spray.
Step 2
Slice the zucchini into thin rounds and place them in a single layer across the bottom of the prepared dish.
Step 3
In a bowl, mix breadcrumbs, grated Parmesan cheese, and a touch of garlic powder for added flavor. Sprinkle half of this mixture over the zucchini.
Step 4
Add a layer of sliced tomatoes and onion, followed by a generous sprinkle of shredded mozzarella cheese.
WANT TO SAVE THIS RECIPE?
Step 5
Top with remaining breadcrumb mixture. Cover with aluminum foil and bake for about 30 minutes. Uncover and bake for an additional 15 minutes until the top is golden brown.
Storage Options
Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, simply place in the oven at 350°F (175°C) until warmed through. For longer storage, you can freeze the casserole in individual portions, which makes it a convenient grab-and-go meal for busy days.
Variations & Substitutions
For a vegan version, substitute cheese with nutritional yeast for a cheesy flavor without dairy. Add more depth by mixing in some mushrooms or bell peppers. For a heartier meal, a layer of cooked quinoa or brown rice can be added at the bottom.
Serving Suggestions
This zucchini casserole pairs beautifully with a simple green salad and a side of crusty bread. It’s perfect for a casual brunch or as a main dish for dinner. This dish is also great for picnics since it can be served warm or at room temperature.
Frequently Asked Questions
Can I prepare this casserole in advance? Yes, you can assemble the casserole, cover it tightly with plastic wrap or foil, and store it in the refrigerator for up to 24 hours before baking. Just be sure to add a few extra minutes to the baking time if it’s going straight from fridge to oven.
What other vegetables can be used in place of zucchini? If zucchini isn’t your favorite, you can try using yellow squash, eggplant, or sliced potatoes. Each will bring a different texture and flavor, so feel free to experiment with what you enjoy.
Is it possible to make this dish gluten-free? Absolutely! Simply replace traditional breadcrumbs with gluten-free breadcrumbs or a crushed gluten-free cereal. Ensure all other ingredients, like cheese and spices, are also verified gluten-free for those with sensitivities.
This easy zucchini casserole balances nutrition and comfort effortlessly, embodying home cooking at its finest. Whether you stick to the classic recipe or decide to mix in your own variations, it’s a dish that promises to satisfy and leave lasting memories at the dinner table.

Easy Zucchini Casserole Recipe
Ingredients
Main Ingredients
- 3 cups zucchini shredded
- 1 cup all-purpose flour
- 0.5 cup grated Parmesan cheese
- 1 cup mozzarella cheese shredded
- 3 large eggs beaten
- 0.5 teaspoon baking powder
- 0.5 teaspoon salt
- 0.25 teaspoon black pepper freshly ground
- 2 tablespoons olive oil
- 1 teaspoon Italian seasoning
- 1 tablespoon fresh basil chopped, for garnish
Instructions
Preparation Steps
- Preheat your oven to 375°F (190°C). Grease a baking dish with olive oil.
- In a large bowl, combine the shredded zucchini, flour, Parmesan cheese, and mozzarella cheese.
- Stir in the beaten eggs, baking powder, salt, and pepper until well combined.
- Transfer the mixture into the prepared baking dish and flatten with a spatula.
- Bake in the preheated oven for 30-35 minutes, until the casserole is golden and cooked through.
- Remove from oven and let cool slightly before cutting. Garnish with fresh basil before serving.