Try this easy spinach lasagna for a filling vegetarian meal. Uncooked noodles are layered with three types of cheese, herbs, and store-bought red sauce.
Preheat the oven to 350 degrees F (175 degrees C).
Heat oil in a large pot over medium heat. Add spinach, onion, garlic, oregano, and basil; sauté until onion has softened, 3 to 5 minutes. Pour in spaghetti sauce and water; simmer for 20 minutes.
Meanwhile, mix cottage cheese, mozzarella, parsley, Parmesan, egg, salt, and pepper together in a bowl until well combined.
Remove sauce from the heat; spoon a small amount into the bottom of a 9x13-inch baking pan. Place four uncooked noodles on top of sauce, then top with 1/3 of the remaining sauce. Layer with four more noodles, 1/2 of the remaining sauce, and 1/2 of the cheese mixture. Repeat layers once more with remaining noodles, sauce, and cheese mixture. Cover with foil.
Bake in the preheated oven for 55 minutes. Remove the foil and bake for 15 more minutes. Let sit for 10 minutes before serving.