Remove 1 pouch Krusteaz Professional Ready to Bake Cinnamon Spice Cake & Muffin batter from refrigerator. No slacking required.
Cut open one end of the pouch and squeeze all of batter into a bowl. Stir in pumpkin puree (or extract if puree unavailable). Mix until combined.
Prepare whoopie pie pan by lightly greasing with butter and flour or non-stick spray.
Pour 2 Tbsp mixture into each cavity of the pan.
For convection oven, bake at 300°F at low fan speed for 8-10 minutes, turning pan halfway through bake time. Allow cake to cool completely before removing from pan.
To assemble spread cream cheese frosting on one cake and sandwich with another cake.