Looking for a delicious, healthy alternative to traditional lasagna? Meet the Zucchini Lasagna Casserole! This dish swaps out pasta for zucchini slices, making it low-carb and packed with nutrients. It's perfect for healthy eaters, home cooks, and anyone in the vegetarian community looking for a hearty, comforting meal without the extra calories.

Zucchini Lasagna Casserole

Ingredients List

Before you get started, gather these ingredients:

For the Zucchini Layers:

  • 3 large zucchinis, thinly sliced lengthwise
  • 1 teaspoon of salt

For the Sauce:

  • 2 tablespoons of olive oil
  • 1 medium onion, finely chopped
  • 3 garlic cloves, minced
  • 1 bell pepper, diced
  • 1 can (28 oz) of crushed tomatoes
  • 2 tablespoons of tomato paste
  • 1 teaspoon of dried oregano
  • 1 teaspoon of dried basil
  • Salt and pepper to taste

For the Cheese Layers:

  • 2 cups of ricotta cheese
  • 2 cups of shredded mozzarella cheese
  • 1 cup of grated Parmesan cheese
  • 1 egg
  • 2 tablespoons of fresh parsley, chopped

Preparation Steps

Step 1: Prepare the Zucchini

  1. Preheat your oven to 375°F (190°C).
  2. Slice the zucchinis thinly lengthwise using a mandolin or a sharp knife.
  3. Lay the zucchini slices on paper towels and sprinkle with salt to draw out excess moisture. Let them sit for 15 minutes, then pat dry.

Step 2: Make the Sauce

  1. Heat olive oil in a large skillet over medium heat.
  2. Add chopped onion and garlic; sauté until translucent.
  3. Stir in diced bell pepper and cook for another 5 minutes.
  4. Add crushed tomatoes, tomato paste, oregano, and basil. Season with salt and pepper.
  5. Reduce heat and simmer for 15-20 minutes, allowing the flavors to meld together.

Step 3: Prepare the Cheese Mix

  1. In a bowl, combine ricotta cheese, 1 cup of mozzarella cheese, Parmesan cheese, egg, and chopped parsley.
  2. Mix until well-blended.

Step 4: Assemble the Casserole

  1. Spread a thin layer of sauce at the bottom of a 9x13-inch baking dish.
  2. Add a layer of zucchini slices over the sauce.
  3. Spread a layer of the ricotta cheese mixture over the zucchini.
  4. Repeat the layers until you run out of ingredients, ending with a layer of sauce.
  5. Sprinkle the remaining 1 cup of mozzarella cheese on top.

Cooking Instructions

  1. Cover the casserole with aluminum foil and bake in the preheated oven for 30 minutes.
  2. Remove the foil and bake for an additional 10-15 minutes until the cheese is bubbly and golden brown.
  3. Remove from the oven and allow it to cool for 10 minutes before serving.

Serving Suggestions

Serve your Zucchini Lasagna Casserole with a side of fresh garden salad or garlic bread. Pair it with a glass of your favorite wine to elevate your dining experience.

Health Tips

Zucchini is low in calories and high in vitamins A and C, making it a fantastic substitute for pasta. This dish is also rich in protein and calcium from the cheese, making it a balanced meal that fits perfectly into a healthy lifestyle.


There you have it—a nutritious and delicious Zucchini Lasagna Casserole that's sure to become a family favorite. Enjoy your homemade creation and relish in the joy of healthy eating! Feel free to share your photos and feedback with us—we'd love to see your version of this dish. Happy cooking!

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