Mix cream cheese, brown sugar, vanilla extract, and powdered sugar in bowl. Eliminate any lumps. Slowly fold in chopped candy bar. Slice Apples and set to side for dipping into your yummy dip. Note: if you want to make it faster, use pre-sliced apples from the store. If you don't like really sour apples, use a red apple instead of green granny smith apples. But the sour and sweet mix is really good.