Preparation Time: and Total Time: 15 min
Spray cold grate of grill with grilling spray or nonstick cooking spray. Preheat grill for medium heat. Grill burgers to desired doneness.
Wrap chopped onion, brown sugar and butter in heavy duty foil and fold to make a pouch. Place on the grill next to the burgers during the last 5 minutes of cooking.
To assemble: on the bottom bun spread mayonnaise, burger, blue cheese, caramelized onion and top bun.
Please note that some ingredients and brands may not be available in every store.