Warm the buns in a 300 degree F oven for about 5 minutes. Meanwhile, heat % cup olive or canola oil in a large (12-inch) skillet over medium-high heat.
Add the patties and cook, turning only once, until a crisp brown crust forms on both sides, about 6 minutes total. If you've chosen a burger that gets topped with cheese, add it now.
Cover the skillet, turn the heat to low, and let the burgers continue to cook until the cheese melts. Top the burgers as desired.