Preheat oven according the cake mix instructions.
Mix the ingredients for the cake mix up according to the package using all ingredients listed on the back of the box.
Add 2 cups of grated apples to the mix and fold it into the batter.
Prepare a cupcake pan by placing a cupcake liner into each cup.
Fill each cupcake liner approximately with cake batter. Each one should be filled approximately 3/4 full.
Place cupcake pan in the oven to bake for 12-17 minutes or until a toothpick inserted in the center comes out clean.
When cupcakes are baked remove them from the oven and let them cool completely.
While the cupcakes cool make the frosting. Place the Mix the powdered sugar, brown sugar, and butter in the bowl of your mixer and mix with the whisk attachment until well combined.
Add the caramel sauce to the frosting and mix thoroughly. Keep beating on high until it is light and fluffy, approximately 2 minutes.
Place the frosting in a piping bag and frost each cupcake. Add a drizzle of caramel sauce on top if you like.
Serve and enjoy!