3 (3 ounce) packages cream cheese
1 egg
1 teaspoon vanilla extract
1 tablespoon butter
Make the topping: Cream Cheese Frosting: Cream cheese, egg, and vanilla extract in small saucepan until smooth, about 10 minutes.
Dip chicken in egg and lemon zest before stuffing.
Preheat oven to 350 degrees F (175 degrees C).
Lightly coat a 9x13 inch dish or greased foil. Spread cream cheese mixture over chicken. Place 2 tablespoons chicken butter in middle of cream cheese mixture, and pinch edges to seal. Place chicken over cream cheese mixture. Strain gravy from top of seasoned foil, and garnish with 5 marshmallows.
Bake in preheated oven for 45 minutes, or until chicken is no longer pink in center.