2 1/2 lb. beef roast or round steak
1 1/2 c. water
1 c. catsup
1 tsp. dry mustard
1/2 c. brown sugar
2 tbsp. vinegar
1 med. onion, chopped
1 tsp. chili powder

Put the meat and water in a crock pot and cook until meat falls apart. Mix remaining ingredients together and add to the meat. Simmer for 30 minutes and serve on buns.