Preheat oven to 350 degrees F. Peel, core, and thinly slice apples. Soak in lemon-lime soda to prevent browning.
Knead flour into Pillsbury cookie dough to make it easy to handle. Roll out dough on large pizza pan. Bake until lightly browned. Remove crust from pan with spatula and cool completely.
Mix cream cheese, brown sugar and vanilla. Spread on thoroughly cooled crust. Pat apple slices dry and arrange on top of cream cheese. Sprinkle with cinnamon, drizzle with caramel topping. Add nuts if desired.