– 20 minutes. while the cake bakes, whip the cream until it has a thick consistency. then add the pumpkin, cream cheese, spices, and powdered sugar to taste. cool the cake, and then dump out onto a new sheet of parchment sprinkled with powdered sugar. spread the pumpkin cream evenly over the cake, and roll, roll, roll! don’t worry if your cake cracks a bit as you roll it because an extra dusting of powdered sugar will fix everything! 