Barbecued Flank Steak Sandwiches
                      Why I Love This Recipe
Add smoky heat to this quick barbecue sauce with a dash of chipotle chile powder. Look for it in the spice section at the supermarket. Total time: 32 minutes.
Ingredients You'll Need
                                     1 (1-pound) flank steak, trimmed
                    
                                     1/2 teaspoon salt
                    
                                     1/4 teaspoon freshly ground black pepper
                    
                                     4 (1/4-inch-thick) slices red onion
                    
                                     1/4 cup ketchup
                    
                                     2 tablespoons light brown sugar
                    
                                     1 tablespoon cider vinegar
                    
                                     1 tablespoon worcestershire sauce
                    
                                     1/4 teaspoon chipotle chile powder
                    
                                     4 (3-ounce) hoagie rolls, split
                    
                               
Directions
Heat a grill pan over medium-high heat. Coat pan with cooking spray. Sprinkle steak evenly with salt and pepper. Add steak to pan; cook 6 minutes on each side or until desired degree of doneness. Remove steak from pan; let stand 10 minutes. Add onion to pan; cook 3 minutes on each side or until lightly browned. Remove from pan; cool.
Combine ketchup and next 4 ingredients (through chipotle chile powder) in a large microwave-safe bowl, stirring well. Microwave at HIGH 1 minute or until thoroughly heated. Cut steak diagonally across grain into thin slices. Add steak to ketchup mixture; toss to coat. Divide steak mixture evenly among bottom halves of rolls; top each serving with one onion slice. Place top half of roll on each sandwich