Ingredients
1 medium onion, finely sliced 1/2 cup ketchup 1/3 cup cider vinegar 1/4 cup packed brown sugar 1/4 cup tomato paste 2 tablespoons sweet paprika 2 tablespoons Worcestershire sauce 3 teaspoons kosher salt 1 1/4 teaspoon freshly cracked black pepper 8-10 chicken thighs 6 buns of choice 1 cup shredded cheese of choice Guacamole.
