12 ounces 80% lean ground beef
2 burger buns
2 avocados
Half a small onion, diced
1 jalapeño, minced
Juice of one lime
3 tablespoons chopped cilantro
Salt and pepper, to taste
Form patties about ¾ inch thick. Make a depression in the center. Brush with canola oil, then season with salt and pepper. Grill over high heat until slightly charred, about 7 minutes for medium-rare and increasing the time for more doneness.
In the last two minutes of cooking, spread the buns with mayonnaise or butter and grill until toasted.
Mash together avocado and then mix in all other ingredients. Serve on top of the burgers with any other desired toppings.