Homemade Sloppy Joes 2 Recipe

Add onion and butter to warm skillet. Brown slightly and set aside. Brown the ground chuck or sirloin. In a small mixing bowl combine the vinegar, brown sugar, ketchup, worcestershire sauce, mustard, water and browned onions. Mix well. Combine the sauce mixture and ground chuck or sirloin. Simmer in the crock pot on low until ready to eat.