3 1/2-4 lb. boneless beef chuck roast
1 c. chopped onions
4 garlic cloves, minced
1/2 c. brown sugar, packed
2 tsp. dry mustard
1/2 tsp. chili powder
1 tsp. paprika
1/3 c. vinegar
3 tbsp. lemon juice
14 oz. bottle ketchup

Cut beef crosswise into 1/4 inch slices. Slice beef raw. Combine all ingredients; mix well. Cook 5-6 hours in the crock pot. Serve on steak rolls.