Cool, then refrigerate any leftovers. To serve as a sandwich, spread split kaiser roll with 1 Tbsp. KRAFT Real Mayo Mayonnaise; sprinkle with 2 tsp. KRAFT Grated Parmesan Cheese. Add 3 oz. sliced leftover cooked meat, 2 Tbsp. leftover cooked onions and 1 KRAFT Singles. Wrap in foil. Bake in 375ºF oven 15 min. or until heated through.
Prepare using any other boneless beef pot roast, such as a rump, bottom round, shoulder or arm roast.
Add 1/2 cup water to the barbecue sauce if a milder flavor is desired.