01 -
Preheat smoker or pellet grill to 250°F.
02 -
In a large bowl, mix ground beef, diced jalapeños, diced onion, and cubed cheddar cheese until evenly combined. Optionally, add more burger seasoning.
03 -
Divide the mixture into four portions and shape into 1/2-pound patties. Season both sides generously with burger seasoning.
04 -
Place the patties directly on the smoker and cook at 250°F until the internal temperature reaches 165°F.
05 -
In the last few minutes of cooking, top each burger with a slice of American cheese and allow it to melt.
06 -
Toast brioche buns. Spread spicy mayo on both sides, then assemble the burgers and serve immediately.