Make up yeast raised donuts according to manufacturer’s instructions, being sure to make round donuts that can be filled. Let cool completely. While the donuts are cooling, mix together ground cinnamon and granulated sugar. This mixture can vary wildly, so use the mixture that your customers like best. Fill donuts with pumpkin cream cheese filling, roll in cinnamon and sugar mixture.
A great starting point for cinnamon and sugar is using 2TBL ground cinnamon to 1 cup granulated sugar. You can add more or less cinnamon depending on your taste.