When I make a roast, I always buy a large one so I have leftovers. This recipe is one of my family's favorite ways to use them.
2 cups shredded, cooked beef
1 cup ketchup
1/2 cup vinegar
4 tablespoons chopped onion
2 tablespoons Worcestershire sauce
4 teaspoons packed brown sugar
1 teaspoon mustard
1 teaspoon garlic powder
Heat all ingredients, except beef to boiling over medium heat, stirring constantly. Reduce heat and simmer for 15 minutes. Stir roast into sauce and serve on buns.
*This can be made ahead and kept warm in the crockpot.