1 box yellow cake mix (or 3 cups homemade)
1 egg
½ cup unsalted butter
3.5 cups confectioners sugar
1 whole egg
2 egg yolks
8oz cream cheese softened
1 (15 oz) can pure pumpkin (NOT pumpkin pie filling)
2 tsp vanilla extract
1 tbsp pumpkin pie spice mix (ground cloves, all spice, green cardamom, and cinnamon)
Additional 1.5 cups powdered sugar