Preheat grill to medium or oven to broil on high.

Melt butter over medium heat in a saucepan. Add diced jalapeño and cook for a minute.

In a small bowl combine combine cream cheese, jalapeño, cilantro, lime juice, and garlic salt. Set aside.

In a large bowl, mix ground turkey with garlic salt, minced onion, and Worcestershire sauce.

Lightly spray a foil lined pan with oil. Divide meat into 8 equal portions and flatten portions into 4-inch round patties, pressing lightly against the pan to flatten.

Divide filling into 4 equal portions. Place filling on 4 of the patties and spread to within a ½ inch of the edge.

Cover with remaining 4 patties and pinch the edges closed.

Grill patties over medium heat for 6-7 minutes on each side or until completely cooked. Or broil by placing burgers on a foil lined pan approximately 6″ from the broiler, 5-6 minutes on each side or until completely cooked. Turkey should reach an internal temperature of 165 degrees.

Serve on buns with optional avocado, bacon, lettuce and tomato.