3-4 lb. roast beef
1/2 c. chopped onion
1 tsp. paprika
1 tsp. prepared mustard
1/8 tsp. pepper
1/4 c. vinegar
1 c. catsup
2 tbsp. brown sugar
1 tsp. salt
1/4 tsp. chili powder
2 tbsp. Worcestershire sauce
1 can tomato soup
1/2 c. water

Cook all together until slightly thickened. Pour over sliced roast beef. Be sure all is covered. Serve on big buns.