01 -
Shape your chuck beef into 1/3 pound balls and stick them in the fridge for half an hour.
02 -
Cook bacon till it's crispy, chop pieces, and leave them to the side.
03 -
Run the onions through a mandoline slicer (use the safety attachment). Squeeze out any water and keep chilled.
04 -
Combine mayo, ketchup, mustard, crispy bacon, apple cider vinegar, Worcestershire sauce, all-purpose rub, and red pepper flakes in a bowl. Chill it afterward.
05 -
Warm up a griddle on medium-high heat. Spread avocado oil, place the burger balls a few inches apart, press them with onions on top, and sprinkle with garlic, salt, and pepper.
06 -
Let burgers cook for 3-4 minutes. Cover with mustard, flip them, add cheese slices, and cook another few minutes till they’re gooey.
07 -
Toast the buns on the griddle. Add Baconnaise sauce, stack two patties, a little more sauce on top, and close with the bun.