In a medium bowl, using your hands, combine turkey, Dijon, Worcestershire, bread crumbs, salt, and 1 c. diced caramelized onions. Form mixture into 3″–4″ patties and place on a baking sheet. Refrigerate covered 1–2 hours. On a medium-high grill or skil- let, coated with nonstick cooking spray, cook each burger for 2–3 minutes on each side. Meanwhile, toast buns to your liking. Assemble burger with avocado, a slice of tomato, a tbsp. of onions, a dollop of goat cheese, and a sprinkle of chives. Serve immediately.