Mix turkey, Mustard, Ketchup, Worcestershire sauce, garlic powder, onion powder, and black pepper in medium bowl until well blended. Shape into 4 patties.
Grill over medium heat 4 to 6 minutes per side or until burgers are cooked through (internal temperature of 165°F). Add cheese 1 minute before cooking is completed. Toast rolls on grill, open side down, about 30 seconds or until golden.
Serve burgers on toasted rolls topped with French’s® Crispy Fried Onions, if desired.