I pre heated a pan with about a tbsp of oil and about 3-4 tbsp of butter. I kept it on medium heat. Once hot, I added mushrooms, sliced green peppers, sliced onions and carrots. Stir occasionally and sauté until soft and pour entire mix into your pasta.
For the lasagna, you can put ricotta cheese, shredded mozzarella cheese, tomato sauce, diced green peppers and cooked chopped meat in between each layer of lasagna. Cover baking pan with foil and cook at 375 for 20 minutes.