Preheat oven to 45 0°F. Spread potatoes and 15 X 10 X1 inch baking pan spray lightly with non-stick cooking spray, and sprinkle with salt. Bake 25 to 30 minutes or until potatoes are tender and lightly browned. Meanwhile, brown ground beef with bell pepper in large nonstick skillet over medium heat 8 to 10 minutes or until beef is no longer pink, breaking up into small crumbles. Pour off drippings. Stir in corn and barbecue sauce, heat through. Serve beef mixture over potatoes Sprinkle with cheese.