PREPARATION:
Blend cream cheese, peanut butter, brown sugar,and vanilla together until smooth. Spread on cooled cookie. Peel, core and slice apples. Dip apple slices in lemon-lime soda to prevent browning. Arrange apple slices on cream cheese mixture.
Sprinkle lightly with cinnamon. Heat caramel topping slightly and drizzle over apples. Sprinkle chopped nuts over pizza. Cut and serve.