In a bowl, combine first 5 ingredients. Let stand for 5 min.
Preheat frying pan over medium heat. Add oil. Scoop batter into pan, making four burgers. Lightly press and flatten into shape. Cook until golden brown, about 5-7 min per side.
Spread bottom halves of buns with dip, then add patties. Finish with toppings of choice. Cover with top bun halves.