I have a soft spot for burgers, but honestly didn't expect to love these Taco Burgers as much as I did. I knew my kids would love it, but I expected to be craving a "regular burger". I was wrong. The taco-seasoned patty with melty cheddar, chipotle mayo, guacamole, and pico de gallo just worked. I'd happily order this at a restaurant.
In a blender, combine the mayonnaise, sour cream, chipotle peppers, lime juice, and salt. Process until smooth. Refrigerate until ready to serve.
Place the meat in a bowl and gently work in the taco seasoning. Form the meat into 6 patties about ½ inch thick. Make an indentation in the center of each patty with your thumb. Sprinkle both sides with salt and pepper.
Preheat a large cast-iron skillet to medium-high, or a Blackstone griddle to medium-low, about 375°F to 400°F.
Toast your buns, cut side down, until lightly browned. Transfer to a plate and cover with foil.
Add the patties, and cook for 4 minutes. Flip, and cook for another 4 minutes.
Add the cheese, and grab a cover or a griddle dome. Add a bit of water (about ¼ cup) to the cook surface and immediately cover. Cook for another minute, to the desired doneness.
Spread the Chipotle mayo on the buns. Add the lettuce, pico de gallo, butter patty, guacamole, and onion to the bottom bun. Add the top bun and serve.