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Easy cheesy zucchini bake in a glass casserole dish, featuring golden-brown melted cheese over sliced zucchini and yellow squash—perfect for easy zucchini recipes, healthy casseroles, and vegetarian meals.

Easy Cheesy Zucchini Bake

A golden, bubbling zucchini casserole with creamy mozzarella, nutty Parmesan, and fresh herbs—quick, wholesome, and utterly irresistible.
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Prep Time 15 minutes
Servings: 6 servings
Course: Main Dish
Cuisine: American
Calories: 150
Ingredients Method Notes

Ingredients
  

  • 2 medium zucchini sliced
  • 2 medium yellow squash sliced
  • 4 tablespoons chopped fresh basil
  • 2 tablespoons thinly sliced green onion
  • 1/2 teaspoon dried thyme
  • 3/4 teaspoon garlic powder
  • 1 cup grated mozzarella cheese
  • 1/2 cup coarsely grated Parmesan cheese plus extra for topping
  • Salt and fresh ground black pepper to taste

Method
 

  1. Preheat oven to 350°F (180°C). Spray an 8" x 8" or 8" x 11" baking dish with olive oil or non-stick spray.
  2. Wash and slice the zucchini and yellow squash into even slices or half-moons.
  3. Chop the fresh basil and thinly slice the green onions.
  4. In a large bowl, mix zucchini, squash, basil, green onions, dried thyme, garlic powder, 1/2 cup mozzarella, and 1/2 cup Parmesan. Season with salt and pepper.
  5. Transfer the mixture to the prepared baking dish. Bake uncovered for 25-30 minutes, until veggies are mostly tender.
  6. Remove from oven, sprinkle the remaining 1/2 cup mozzarella and extra Parmesan on top. Return to oven and bake for another 10-15 minutes until golden and bubbly.
  7. Cool slightly before serving. Enjoy hot for best flavor and texture.

Notes

For best results, lightly salt and blot zucchini slices before baking to reduce moisture. Leftovers are even more flavorful the next day!