Form your burgers and set aside
Chop sweet potatoes and lightly coat with avocado oil, salt, and pepper
Cook sweet potatoes in the air-fryer or oven at 425 until crispy
Grill or cook burgers on the stove
Chop romaine, tomatoes, and pickles
Add mayo, ketchup, mustard, and pickle in a small dish or jar and whisk together to combine
Add lettuce to a bowl or plate top with sweet potatoes, tomatoes, pickled onions, pickles, burger, and drizzle on the special sauce