Puncture holes in sweet potatoes and air fry or bake on 400F for about an hour or until soft.
Preheat pan to high.
Season ground beef, mix together and split into 4 pieces.
Add a piece onto pan, smash down with a spatula. Repeat for all pieces.
Flip patty after 2-3 minutes and repeat until desired finish then add cheese on top.
Once sweet potatoes are soft, remove skins then add eggs and egg whites and combine.
On a waffle maker on high, add sweet potato mixture and close. Cook for about 4 minutes. (You will need 8 patties)
Combine sauce ingredients.
Chop tomato and lettuce.
Assemble burger (in order): lettuce, tomato, bun, sauce, bun
Enjoy!
