Mix spice cake mix and pumpkin puree together in a bowl until cake mix is completely moistened. Grease the mini pans and fill 2/3 full. In any size CanCooker place rack in the bottom of the CanCooker and add water to the top of the rack. Place pans on rack and on medium heat bring to a steam. Steam muffins for thirty minutes or until toothpick inserted in center comes out clean. Repeat until all batter is used. Carefully remove and cool on cooling rack 10 minutes. Frost with cream cheese frosting and enjoy!