Saute some onions and garlic in a pan. Get a couple of cans of crushed tomatoes (with puree added is good). Put them in with the onions and garlic and cook for a few minutes. Ladle the tomatoes into a blender (small batches works best), blend, and return to the pan. Do this until it has the texture you'd like. If you want, you can thicken it with bread crumbs (add some pieces of dry bread to the tomatoes when you blend them). If you have fresh basil add this to the blender mixture too, if not, use lots and lots of dried basil - it won't be as good as fresh but it'll do. When you serve it, swirl in some cream for delicious tomato basil soup.