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.
Bake for about 45-50 minutes (checking the center after 45 with a tooth pick test). Serve warm with a scoop of vanilla ice cream.
ENJOY