Crockery Barbecue Beef
["3/4 c. cola (not diet)", "1/4 c. Worcestershire sauce", "1 Tbsp. vinegar", "2 cloves garlic, minced", "1 tsp. beef bouillon", "1/2 tsp. dry mustard", "1/2 tsp. chili powder", "1/4 tsp. red pepper", "1 1/2 lb. chuck roast", "2 medium onions, chopped", "1/2 c. ketchup", "2 Tbsp. butter"]
["Mix cola, Worcestershire sauce, vinegar, garlic, bouillon, mustard, chili powder and red pepper; reserve 1/2 cup sauce. Place meat in a slow cooker with onions; pour sauce over.", "Cook 10 to 12 hours on low."]
["cola", "Worcestershire sauce", "vinegar", "garlic", "beef bouillon", "dry mustard", "chili powder", "red pepper", "chuck roast", "onions", "ketchup", "butter"]