Lentil and spinach lasagna is a vegetarian twist on a classic Italian dish. Start by sautéing onions, garlic, and spinach in a pot until the spinach is wilted. Add in lentils, tomato sauce, and your favorite seasonings. Layer the lentil mixture with lasagna noodles and ricotta cheese. Top with mozzarella cheese and bake in the oven until the cheese is melted and bubbly.
