Crumble the beef and sausage into a Dutch oven over medium-high heat and cook until just starting to brown.

Add the onion and bell pepper and continue cooking until the meats are done. Drain any excess fat.

Transfer meat mixture to a slow cooker on low heat.

Stir in all of the remaining ingredients except for the buns.

Cook on low for 4 hours, stirring occasionally. Add more water, a little at a time, if the mixture gets too thin.

Serve over toasted buns.