Cheesy Zucchini Casserole

BY

February 28, 2026

Cheesy Zucchini Casserole turns fresh zucchini into a creamy, comforting baked dish with a golden, bubbly top. Tender zucchini slices blend with melted cheese and simple seasonings for rich flavor in every bite. This easy casserole works perfectly as a side dish or light dinner.


Why Youโ€™ll Love This Recipe

  • Creamy and cheesy texture
  • Simple everyday ingredients
  • Great way to use fresh zucchini
  • Family-friendly side dish
  • Perfect for potlucks

Preparation and Cooking Time

  • Prep Time: 15 minutes
  • Cook Time: 30โ€“35 minutes
  • Total Time: 50 minutes

Ingredients

  • 4 medium zucchini, sliced
  • 1 cup shredded cheddar cheese
  • ยฝ cup shredded mozzarella cheese
  • ยฝ cup sour cream
  • ยผ cup grated Parmesan cheese
  • 1 large egg
  • ยฝ small onion, diced
  • 1 clove garlic, minced
  • ยฝ teaspoon salt
  • ยฝ teaspoon black pepper
  • 1 tablespoon olive oil

Optional: ยฝ cup crushed butter crackers for topping


Step-by-Step Instructions

  1. Preheat oven to 375ยฐF. Lightly grease a baking dish.
  2. Heat olive oil in a skillet over medium heat. Cook onion and garlic until soft.
  3. Add sliced zucchini and sautรฉ 3โ€“4 minutes until slightly tender. Remove from heat.
  4. In a bowl, whisk egg and sour cream until smooth.
  5. Stir in cheddar, mozzarella, Parmesan, salt, and pepper.
  6. Fold zucchini mixture into cheese mixture.
  7. Spread evenly in prepared baking dish.
  8. Sprinkle crushed crackers on top if using.
  9. Bake 30โ€“35 minutes until golden and set.
  10. Let rest 5 minutes before serving.

Cheesy Zucchini Casserole sets best when you allow it to cool slightly before slicing.


Serving Suggestions

Serve warm alongside grilled chicken, roasted beef, or baked fish. Pair with a crisp green salad for a balanced meal.


Quick Tips or Variations

  • Add cooked ground beef for a heartier casserole.
  • Use Monterey Jack for extra melt.
  • Sprinkle fresh parsley before serving.

FAQs

Why is my zucchini casserole watery?

Zucchini releases moisture while cooking. Sautรฉ briefly and avoid overcrowding the pan.

Do you peel zucchini for casserole?

No. The peel softens during baking and adds texture.

Can I make zucchini casserole ahead of time?

Yes. Assemble up to 24 hours ahead and refrigerate before baking.

Can you freeze cheesy zucchini casserole?

Yes. Freeze after baking and cooling completely for up to 2 months.


Conclusion

Cheesy Zucchini Casserole delivers creamy texture, melted cheese, and tender zucchini in every bite. Bake it once, and enjoy a simple, comforting dish the whole family will love.

Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon

Cheesy Zucchini Casserole


5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

  • Author: Laura Jennings
  • Total Time: 50 minutes
  • Yield: 6 servings 1x
  • Diet: Vegetarian

Description

Cheesy Zucchini Casserole that bakes tender and creamy with a golden cheesy topping.


Ingredients

Scale

4 medium zucchini, sliced

1 cup shredded cheddar cheese

1/2 cup shredded mozzarella cheese

1/2 cup sour cream

1/4 cup grated Parmesan cheese

1 large egg

1/2 small onion, diced

1 clove garlic, minced

1/2 teaspoon salt

1/2 teaspoon black pepper

1 tablespoon olive oil


Instructions

1. Preheat oven to 375ยฐF and grease baking dish.

2. Cook onion and garlic.

3. Add zucchini and sautรฉ briefly.

4. Whisk egg and sour cream.

5. Stir in cheeses and seasonings.

6. Fold in zucchini mixture.

7. Spread into dish.

8. Bake 30-35 minutes until golden.

9. Rest before serving.

Notes

Sautรฉ zucchini to reduce moisture.

Let casserole rest before slicing.

Store leftovers up to 3 days.

  • Prep Time: 15 minutes
  • Cook Time: 35 minutes
  • Category: Side Dish
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 210
  • Sugar: 4g
  • Sodium: 390mg
  • Fat: 16g
  • Saturated Fat: 8g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 8g
  • Fiber: 2g
  • Protein: 10g
  • Cholesterol: 65mg

Leave a Comment

Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star