Preheat oven to 400. Spray a baking pan with cooking spray.
In a medium bowl combine the ground turkey and garlic salt.
Take an onion half and fill it with ground turkey. Press in a cube of cheese. Top with more ground turkey and another piece of onion. Wrap the whole thing with 2 slices of bacon.
Bake for 30-45 minutes or until the meat is cooked through and the bacon is crisp.