Mix all ingredients together. Spray 11x17 sheet pan & line with wax paper. Make sure this pan will fit in your oven. (can use smaller pan but cake will be thicker). Spray wax paper. Pour batter into pan and bake at 375 degrees for 13-15 min. Make sure cake is completely done. Roll into Jelly roll style, with wax paper on it & refridgerate for 1 hour.
Filling: Mix 1 8oz cream cheese with 2T butter(softened) 1tsp. of vanilla & 1 cup powdered sugar. When cake has cooled, unroll cake. Remove old wax paper & place cake on clean wax paper & spread filling over cake. Roll jelly roll again & wrap in handy wrap & foil. Place back in refridgerator for at least 1 hour. Dust cake with pd sugar & slice. You can substitute sweet potatoes for pumpkin and have a Sweet Potato Roll. Enjoy!