Preheat your oven to 350° and grease a 9 x 13 baking dish with a nonstick cooking spray
In a large bowl mix together the ingredients for your chocolate fudge cake
Pour your fudge cake into your greased baking dish and set aside
In a separate bowl, mix together your cream cheese, butter, peanut butter, and vanilla until well mixed
Mix in your powdered sugar 1 cup at a time until you add all 4 cups
Add your peanut butter mixture in spoonfuls to your chocolate cake mix and lightly spread around
Now sprinkle your Reese’s peanut butter cup halves and chocolate chips on top