Instructions

For the burgers:

1. Mix the grated onion, maple syrup, Worcestershire sauce, and mustard in a large bowl. Add the turkey and use your hands to gently but thoroughly mix. Form three patties and place each on a square of waxed paper. Sprinkle burgers with kosher salt and freshly ground pepper.
2. To grill, cook 4-5 minutes per side over direct or high heat, until cooked through (160 degrees).
3. To cook on the stovetop, heat a lightly oiled grill pan or heavy skillet (such as cast iron) over medium to medium-high heat and cook burgers for about 6 minutes per side, until cooked through (160 degrees).

For the caramelized onions & apples:

1. Melt butter in a medium skillet over medium heat. Add onions and cook, stirring occasionally, for about 15 minutes or until they are very soft and getting brown (if they are browning too quickly, reduce heat to medium-low). Add apples and a sprinkle of salt and pepper and cook 3-4 more minutes or until apples are just tender.
2. To serve, melt cheese (if using) onto burgers during the last minute of cooking (or melt it onto the buns). Place each burger on a bun and pile with cooked apples and onions. Add bacon and/or bbq sauce if using!