Pre-heat grill or non-stick skillet to medium-high. In a small bowl, combine ground sirloin, seasoning, cilantro and scallions and form into a patty about 1/2" thick. Grill patty 3-4 minutes each side. At the last minute of cooking, top patty with pepper jack cheese. Spread one side of the Sandwich Thins® roll with ketchup and sprinkle hot sauce to taste. Assemble sandwich by topping patty with sliced tomato, onion, avocado and lettuce. *Recipe can be made by substituting lean ground turkey or veggie burger patty. Cook veggie patty according to package instructions and omit cilantro and scallions.