When the meat has browned, add onion and red peppers to the skillet. Reduce heat to medium and cook onions, peppers, red wine vinegar, and Worcestershire sauce with meat for 5 minutes.
4 Add tomato sauce and paste to pan. Stir to combine.
5 Reduce heat to simmer and cook Sloppy Joe mixture 5 minutes longer.
6 Use a large spoon, place Sloppy Joe mixture onto the buns.