Mix the ingredients together in a large bowl, then form 4-8 patties (depending on how thick/big you want them).
Heat a large cast-iron skillet or grill pan over medium-high heat on the stove or a grill to medium.
Cook the patties, turning once, until the desired doneness (about 3-4 minutes a side for the smaller patties, 5-6 minutes a side for the larger ones).
Serve the burgers with a large dollop of guacamole on top!