Put all the sauce in a large pan. Simmer on low heat for about 1 hour stirring occasionally. Longer you let it simmer, the more flavourful it becomes. While the sauce is cooking, prepare everything else.
Drain tofu and squeeze out an excess water. Mash everything together. Cook the manicotti by following the directions on the box. When the manicotti is done, preheat your oven to 350F degrees. Put some of the sauce on the bottom of a rectangular baking pan. Now, carefully, I mean carefully, stuff the manicotti with your stuffing. Place the stuffed manicotti in the pan and splatter some more sauce on top. Cover with some foil and bake for 30-35 minutes. Let cool for five minutes before serving.
posted by Mr Falafel