Ingredients
- Cooking spray
- 4 cups prepared marinara sauce
- 1 pound bulk Italian sausage
- 1 tablespoon water
- 1 green bell pepper, chopped
- 1/2 red onion, chopped
- 3 cups cottage cheese
- 4 eggs, beaten
- 1/3 cup Parmesan cheese
- 2 teaspoons dried parsley
- 1 (8 ounce) package no-boil lasagna noodles, or more if needed
- 1/2 cup mini pepperoni pieces, or more to taste
- 1/2 cup sliced mushrooms, or to taste (optional)
- 1/4 cup sliced black olives, or to taste (optional)
- 3 cups shredded mozzarella cheese
Directions
Preheat oven to 375 degrees F (190 degrees C). Spray a 9×13-inch baking dish with cooking spray.
Heat spaghetti sauce in a saucepan over medium heat.
Cook and stir sausage and water in a large skillet over medium heat, using a potato masher to break sausage into small pieces, until sausage is crumbly and almost cooked through, about 5 minutes. Add pepper and onion; cook and stir until onion is tender, 5 to 10 minutes.
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Stir cottage cheese, eggs, Parmesan cheese, and parsley together in a bowl.
Spread about 1 cup warmed spaghetti sauce into the bottom of the prepared baking dish. Arrange 3 lasagna noodles over the sauce. Spread 1/2 of the cottage cheese mixture over the noodles, another 1 cup spaghetti sauce over the cheese, and 2/3 cup sausage mixture over the top. Sprinkle 1/2 of the pepperoni pieces, 1/2 of the sliced mushrooms, and 1/2 of the olives over the sausage mixture. Scatter 1/3 the mozzarella cheese over the top and arrange 3 lasagna noodles atop the cheese. Repeat layering again.
Pour remaining spaghetti sauce over the lasagna and sprinkle remaining mozzarella cheese over the top. Cover baking dish with aluminum foil.
Bake in the preheated oven until sauce is bubbling around the edges, about 25 minutes. Remove aluminum foil and continue baking until cheese is melted and golden, about 5 minutes more. Cool for 15 minutes before slicing.