A classic Italian comfort food, vegetable lasagna is made with layers of lasagna noodles, marinara sauce, assorted vegetables, and cheese. With the help of a food processor, you can quickly chop the vegetables like bell peppers, zucchini, and mushrooms into small pieces. Layer the vegetables with the noodles, sauce, and cheese, and bake until the cheese is melted and bubbly for a satisfying vegetarian dinner.