PREHEAT grill to medium heat. Mix meat and seasoning mix. Shape into eight thin patties. Mix cream cheese spread and shredded cheese. Spoon about 2 tablespoons of the cheese mixture onto center of each of four of the patties; top with second patty. Pinch edges of patties together to seal.
GRILL 7 to 9 minute on each side or until cooked through
COVER bottom halves of buns with burgers. Top with salsa, avocados and top halves of buns.