Preheat a grill to medium high. Grill the serrano, Cubanelle and poblano peppers, turning, until charred all over, 6 minutes for the serrano, 8 minutes for the Cubanelle, and 10 to 12 minutes for the poblano. Transfer to a large bowl, cover with plastic wrap and let steam 10 minutes. Peel, seed and chop all the peppers.
Heat the vegetable oil in a medium saucepan over medium-high heat. Add the onion, season with salt and cook, stirring, until browned, 5 to 6 minutes. Add the garlic and cumin and cook, stirring, until the cumin is toasted, about 1 minute. Add 1 cup water, the grilled peppers and 1/2 teaspoon salt. Simmer over medium heat until most of the liquid has cooked off, 8 to 10 minutes. Stir in the vinegar and season with salt.
Form the ground beef into 8 patties, about 4 inches wide and 1/2 inch thick; season with salt and pepper. Oil the grill grates. Grill the burgers over medium-high heat, 3 to 31/2 minutes per side for medium rare; top each with a slice of cheese after flipping and cover to melt. Toast the buns cut-side down, about 30 seconds.
Spread some mayonnaise and barbecue sauce on the buns. Serve the patties on the buns with lettuce, sliced onion and the grilled chile salsa.
Tools You May Need
Photograph by Ryan Dausch
Tools You May Need
Price and stock may change after publish date, and we may make money off
these links.
By entering your email address, you agree to our Terms of Use
and acknowledge the Privacy Policy.
Food Network and
its affiliates
may use your email address to provide updates, ads, and offers.
To withdraw your consent or learn more about your rights, see the
Privacy Policy.