Preheat oven to 350 degrees

In a bowl, mix together the cake mix, butter, and apple cider until combined into a soft dough. Divide the dough in have and press 1/2 into the bottom of a 9 x 13 inch baking dish. You can spray your hands with cooking spray so that the stick dough won't stick to you hands.

Spread the caramel dip evenly over the pressed layer of dough. Then even top with walnuts, apples, and chocolate chips.

Crumble the remaining 1/2 of the dough over the top to evenly coat.

Bake at 350 for 25 minutes. Allow bars to cool completely.

In a bowl, combine the icing ingredients together and drizzle over the cooled bars. Cut into 24 bars and serve.