Mix Sun Flour Mills Pumpkin Cake Mix and mashed sweet potato in a mixer for 1-2 minutes.
Transfer batter into a ziploc/piping bag. Cut the tip and pipe into a greased donut pan.
Bake in a 350F oven for 12-18 minutes.
Remove from donut pan and cool on a cooling rack.
Once cool enough to handle, lightly brush with coconut oil and coat in cinnamon sugar.