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Golden baked zucchini squash casserole topped with melted cheese and herbs on a casserole kitchen table.

Zucchini & Squash Casserole


  • Total Time: 45 mins
  • Yield: 6 servings 1x

Description

A light and cheesy summer casserole featuring layers of fresh zucchini and yellow squash, topped with a crispy breadcrumb crust. Perfect as a side or vegetarian main, this easy recipe highlights garden-fresh flavors.


Ingredients

Scale
  • 3 medium zucchini, sliced into 1/4-inch rounds
  • 3 medium yellow squash, sliced into 1/4-inch rounds
  • 1 medium onion, thinly sliced
  • 2 cloves garlic, minced
  • 1 1/2 cups shredded mozzarella cheese
  • 1/2 cup shredded cheddar cheese
  • 1/2 cup breadcrumbs
  • 2 tablespoons olive oil
  • 1 tablespoon fresh basil, chopped
  • 1 teaspoon fresh thyme leaves
  • Salt and black pepper, to taste

  • Instructions

    1. Preheat oven to 375°F (190°C) and lightly grease a 9×13-inch casserole dish with olive oil.

    2. In a large bowl, toss zucchini and yellow squash slices with salt, then let sit in a colander for 10 minutes. Pat dry with paper towels.

    3. Heat olive oil in a skillet over medium heat. Sauté onion and garlic until translucent, about 3 minutes. Add squash slices and cook for 2–3 minutes, stirring to release excess moisture. Season with pepper and half of the fresh herbs.

    4. Arrange half of the sautéed vegetables in the bottom of the prepared dish. Sprinkle half of the mozzarella and cheddar over the vegetables.

    5. Repeat layers with remaining vegetables and cheeses, ending with cheese on top.

    6. In a small bowl, combine breadcrumbs with remaining herbs and a drizzle of olive oil. Sprinkle evenly over the cheese layer.

    7. Bake for 25–30 minutes, until cheese is bubbling and breadcrumbs are golden brown.

    8. Remove from oven and let rest for 5 minutes before serving.

    • Prep Time: 15 mins
    • Cook Time: 30 mins