A delightful twist on the classic burger, featuring smoky onion relish and a tangy chipotle mayo.
Preheat your grill to medium-high heat.
Ensure the grill grates are clean and lightly oiled to prevent sticking.
Slice the red onions into rounds and brush them with olive oil.
Cut the onions evenly to ensure they cook uniformly.
Grill the onion slices until tender and slightly charred, about 8 minutes.
Turn the onions halfway through grilling for even cooking.
Transfer the grilled onions to a bowl and toss with balsamic vinegar. Set aside.
Let the onions marinate for a few minutes to absorb the vinegar flavor.
In a small bowl, mix mayonnaise, chipotle pepper, and lime juice until smooth. Chill until ready to use.
Adjust the chipotle pepper quantity to your preferred spice level.
Form the ground beef into four equal patties and season with salt and pepper.
Make a small indentation in the center of each patty to prevent puffing during cooking.
Grill the patties for about 4 minutes per side, or until cooked to your desired doneness.
Avoid pressing down on the patties to retain their juices.
Place a slice of cheddar cheese on each patty during the last minute of grilling to melt.
Cover the grill briefly to help the cheese melt faster.
Assemble the burgers by spreading chipotle mayo on the bottom bun, adding lettuce, a patty with cheese, grilled onions, and a tomato slice. Top with the other half of the bun.
Toast the buns lightly for added texture and flavor.
Serve the burgers immediately with your favorite sides.
Pair with sweet potato fries or a fresh salad for a complete meal.