Press cookie dough into a greased 14-inch pizza pan. Bake at 350 degrees F for 20 minutes or until golden brown. Cool on a wire rack. Run a large flat spatula under crust to loosen from pan.
In a mixing bowl, beat cream cheese, peanut butter, brown sugar and milk until smooth. Spread over the cooled crust.
In a bowl, combine apples and lemon-lime soda; drain well. Toss apples with cinnamon; arrange over cream cheese. Drizzle with the caramel topping and sprinkle with pecans. Cut into wedges.
Yields 8 to 10 servings.