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A mouth-watering layered zucchini casserole in a large glass baking dish, with alternating layers of thinly sliced zucchini, a creamy cheese sauce, and a golden breadcrumb topping. The zucchini slices are neatly arranged in a overlapping pattern, glistening with a light olive oil glaze. Soft natural lighting casts warm shadows, highlighting the textures and colors of the dish. The casserole is photographed from a high angle, showcasing the beautiful layered presentation. The overall scene exudes a cozy, comforting atmosphere, inviting the viewer to imagine the delicious flavors and aromas of this wholesome, homemade dish.

Layered Zucchini Casserole

Layered Zucchini Casserole is a flavorful, veggie-packed dish that’s light, cheesy, and perfect for a quick family dinner.
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Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Course Side Dish / Main Course
Cuisine American / Mediterranean-inspired
Servings 6
Calories 180 kcal

Ingredients
  

  • 4 medium zucchini thinly sliced lengthwise
  • 1  tbsp olive oil
  • Salt & pepper to taste
  • 1 small onion thinly sliced
  • 2 cloves garlic minced
  • 1 cup marinara or tomato sauce
  • 1  tsp dried oregano
  • 1  tsp dried basil
  • 1 cup ricotta cheese or cottage cheese
  • 1  cup shredded mozzarella cheese
  • ½  cup grated Parmesan cheese

Instructions
 

  • Preheat: Preheat oven to 375 °F (190 °C). Lightly grease a 9x13‑inch baking dish.
  • Prep zucchini: Toss zucchini slices with olive oil, salt, and pepper. Arrange in a single layer on a baking sheet and roast 8 minutes to remove excess moisture. Pat dry.
  • Sauté aromatics: In a skillet, sauté onion and garlic until softened. Stir in marinara sauce, oregano, and basil; simmer 2 minutes.
  • Layer: Spread a thin layer of sauce in the dish. Add half the zucchini slices, then dollops of ricotta, a third of the mozzarella, and a sprinkle of Parmesan. Repeat: sauce, zucchini, cheeses. Finish with remaining sauce and cheeses on top.
  • Bake: Bake 35–40 minutes until bubbly and golden.
  • Rest: Let stand 10 minutes before slicing to set layers.
Keyword zucchini bake, layered casserole, summer vegetables, cheesy, vegetarian, gluten‑free option