Flavor Base: Heat oil in a large skillet over medium heat. Add the diced onion and pepper, cooking until onion is a bit soft and translucent, about 3 minutes.
Sauce: Stir in all ingredients except TVP. Bring to a gentle simmer, then add TVP.
Cook: Cover and cook for 15 minutes, or until mixture is thick and TVP is soft.
Serve: Spoon vegan sloppy joe mixture onto hamburger buns and serve!
