Preheat grill to medium.
In a large bowl, stir together seasoning, salsa, onion and jalapeno. Mix in ground turkey. Mix in Doritos. Divide turkey mixture into equal portions and shape into patties (I got 6 large patties).
Oil grill grates to avoid sticking. Place burgers on grill and cook about 10 minutes, turning over as needed. Add desired amount of cheese 1 minute before removing from grill. Grill hamburger buns for 1-2 minutes if desired.
While burgers are cooking stir together the avocado, sour cream and lime juice to make the Avocado Cream.
Spread avocado cream on the inside top of the bun. Serve burgers topped with lettuce and additional crushed Doritos on the buns.
