Combine burger ingredients in a bowl and form into 8 equal patties. Place on a parchment paper covered baking sheet and bake for 25 minutes.
Place slice of cheese on each patty and bake for 5 minutes more.
In a small bow, combine sauce ingredients. It will be a loose sauce.
Build the Burger: Place cheese burger on bottom bun. Ladle sauce over top (as much as you like, it will be messy). Top with a handful of crispy onions and top bun. Press down slightly to help it all stay together.
Keyword burger, chicken burger, dijon, Ham, maple syrup, mayo, Swiss Cheese