CROCK POT COWBOY CALICO BEANS

CROCK POT COWBOY CALICO BEANS 1 pound lean ground beef (90% lean) 1 large sweet onion, chopped 1/2 cup packed brown sugar 1/4 cup ketchup 3 tablespoons cider vinegar 2 tablespoons yellow mustard 1 can (16 ounces) butter beans, drained 1 can (16 ounces) kidney beans, rinsed and drained 1 can (15 ounces) pork and beans 1 can (15-1/4 ounces) lima beans, rinsed and drained In a large skillet, cook beef and onion over medium heat until meat is no longer pink; drain. Transfer to a 3-qt. slow cooker. Combine the brown sugar, ketchup, vinegar and mustard; add to meat mixture. Stir in the beans. Cover and cook on low until heated through, 4-5 hours.