In a medium bowl, beat cream cheese, garlic salt and green onion until well mixed.
In a small bowl, whisk egg until well beaten.
Place one heaping teaspoon of cream cheese mixture into the center of a wonton wrapper.
Dip your finger into the beaten egg and lightly coat the outer edges of the wrapper..
Bring all four corners of the wonton together up to the center. Pinch all the sides together to form an "X". Place filled wontons on a greased cookie sheet.
Repeat for remaining wontons and filling.
Lightly spray the tops of the wontons with cooking spray to help them brown.
Bake at 400 degrees F for 7-12 minutes or until tops are golden brown.