To prepare a zesty chipotle cheddar burgers recipe, you'll need: 1 pound ground sirloin steak, 2 tablespoons kosher salt, 1/4 teaspoon ground cumin, 1 tablespoon ground paprika, and 2 teaspoons ground black pepper. Preheat the oven to 450?F (232?C) and grease 2 x 13-inch baking pans with nonstick cooking spray. Place the steaks in the pan and cook until browned on both sides, about 5 minutes. Remove from the heat and set aside to cool. Meanwhile, prepare the barbecue sauce as directed on the package. Toss the shredded cheddar cheese with the olive oil, garlic, thyme, chili powder, salt and pepper to taste. Spread the sauce evenly on each patty. Heat the grill to medium-high heat. Grill the hamburgers until the cheese is melted and the meat is no longer pink, 4 to 6 minutes per side. Serve with sour cream and guacamole.