Pineapple-Stuffed Burgers

Steps

• 1

  In a small saucepan, combine the brown sugar, ketchup and mustard. Cook over medium heat for 2-3 minutes, stirring occasionally.
• 2

  Meanwhile, shape beef into four patties. Place pineapple slices on two patties; top with remaining patties. Seal edges; sprinkle with salt and pepper.
• 3

  Coat grill rack with cooking spray before starting grill. Slather burgers with sauce and grill, covered, over medium-hot heat for 7-9 minutes. Flip over and apply more sauce and grill an additional 7-9 minutes or until a meat thermometer reads 160° F and juices run clear. Serve on buns.