For the Burger Patties. For the Avocado Sauce. For the Chipotle Slaw. Assemble burgers by spreading a thin layer of the Avocado Sauce across the bottom bun. Then place the burger on top. Top that with Chipotle Slaw, Pico de Gallo, and a sprinkle of crumbled queso fresco. Add the top bun and enjoy!