Preheat oven to 350 degrees. Prepare a 9x13 baking pan with non-stick spray.
In a large bowl, mix together the cake mix, pumpkin, eggs, water, oil, sugar and pumpkin pie spice. Pour into the prepared pan.
In another bowl, melt the butter and mix together with the room temperature cream cheese. Stir in the powdered sugar and mix until well combined.
Place spoonful’s of the cream cheese mixture all over the top of the cake mixture. Using a knife, gently swirl through the cream cheese. Sprinkle chocolate chips on top and bake for 30-35 minutes.
When done, allow the cake to almost completely cool. If you cut before it cools, the cake will be very soft.