Spicy Peanut Butter Burger

olive oil

large yellow or sweet onion, peeled

salt

sugar

water, as needed

burger patties (your favorite), cooked to your liking

peanut butter

avocado, peeled, pitted, and mashed

large wedge of iceberg lettuce, cleaned and shredded

Spicy Kimchi Sauce (recipe follows)

fresh gluten free buns, toasted