3 lb. beef boneless chuck roast
1 c. barbecue sauce
1/2 c. peach or apricot preserves
1/3 c. chopped green bell pepper
1 tbsp. Dijon mustard
2 tsp. packed brown sugar
1 small onion, sliced
kaiser or hamburger buns, split

Trim excess fat from beef. Cut beef into 4 pieces. Place beef in 4 to 5-quart slow cooker. Mix remaining ingredients, except buns; pour over beef. Cover and cook on low heat setting 7 to 8 hours or until beef is tender. Remove beef on low heat setting 20 to 30 minutes longer or until beef is hot. Fill buns with beef mixture.

Note: This recipe was tested in slow cookers with heating elements in the side and bottom of the cooker, not in cookers that stand only on a heated base. For slow cookers with just a heated base, follow the manufacturer's directions for layering ingredients and choosing a temperature.