
Here’s a comforting and delicious Cheesy Zucchini Casserole — the perfect way to use up fresh zucchini! It’s creamy, cheesy, and topped with a golden breadcrumb crust.
🥒🧀 Cheesy Zucchini Casserole
Tender zucchini baked in a rich cheese sauce and topped with crispy breadcrumbs — a cozy, veggie-packed side dish or light main!
⏱️ Time:
- Prep Time: 15 minutes
- Cook Time: 30–35 minutes
- Total Time: ~50 minutes
✅ Ingredients:
- 4 cups zucchini, sliced into thin half-moons
- 1/2 cup onion, finely chopped
- 2 tablespoons olive oil or butter
- 1/2 cup sour cream or Greek yogurt
- 1/2 cup shredded cheddar cheese
- 1/4 cup Parmesan cheese
- 1 large egg, beaten
- 1/2 teaspoon garlic powder
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
Topping:
- 1/2 cup breadcrumbs (plain or panko)
- 1 tablespoon butter, melted
- Optional: extra shredded cheese for topping
👩🍳 Instructions:
- Preheat oven to 375°F (190°C). Lightly grease an 8×8-inch or similar baking dish.
- Sauté veggies: In a large skillet, heat olive oil/butter over medium heat. Add zucchini and onion. Cook for 5–7 minutes until softened. Remove excess moisture if needed.
- Make the filling: In a bowl, mix sautéed zucchini and onions with sour cream, cheddar, Parmesan, egg, garlic powder, salt, and pepper.
- Assemble casserole: Spread the mixture into the prepared baking dish.
- Prepare topping: In a small bowl, mix breadcrumbs with melted butter. Sprinkle over the casserole. Add extra cheese on top if desired.
- Bake: Bake for 30–35 minutes, until golden and bubbly.
- Cool slightly before serving — enjoy warm!
🍽️ Serving Size:
- Serves 6 as a side, or 4 as a light main dish
📝 Notes & Tips:
- Remove excess water: If your zucchini is very watery, you can lightly salt it and let it sit for 10 minutes, then blot with a paper towel.
- Add protein: Mix in cooked ground chicken, turkey, or bacon for a heartier dish.
- Make it gluten-free: Use gluten-free breadcrumbs or crushed pork rinds.
- Reheats well: Store in the fridge for up to 3 days. Reheat in oven or microwave.
🥒🧀 Cheesy Zucchini Casserole
6
servings15
minutes30
minutesIngredients
4 cups zucchini, sliced into thin half-moons
1/2 cup onion, finely chopped
2 tablespoons olive oil or butter
1/2 cup sour cream or Greek yogurt
1/2 cup shredded cheddar cheese
1/4 cup Parmesan cheese
1 large egg, beaten
1/2 teaspoon garlic powder
1/2 teaspoon salt
1/4 teaspoon black pepper
Topping:
1/2 cup breadcrumbs (plain or panko)
1 tablespoon butter, melted
Optional: extra shredded cheese for topping
Directions
- Preheat oven to 375°F (190°C). Lightly grease an 8×8-inch or similar baking dish.
- Sauté veggies: In a large skillet, heat olive oil/butter over medium heat. Add zucchini and onion. Cook for 5–7 minutes until softened. Remove excess moisture if needed.
- Make the filling: In a bowl, mix sautéed zucchini and onions with sour cream, cheddar, Parmesan, egg, garlic powder, salt, and pepper.
- Assemble casserole: Spread the mixture into the prepared baking dish.
- Prepare topping: In a small bowl, mix breadcrumbs with melted butter. Sprinkle over the casserole. Add extra cheese on top if desired.
- Bake: Bake for 30–35 minutes, until golden and bubbly.
- Cool slightly before serving — enjoy warm!

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