Combine wet ingredients (milk, egg, sour cream and apple sauce). Add pancake mix and mix well until there are no more clumps and let sit 3-5 while you turn oven to 350 degrees. Use a spoon to dollop batter into a greased doughnut pan(s). Batter should fill doughnut pan to the center, but don't cover the center. Bake for 13-15 minutes. Allow to cool for a couple minutes while you mix powdered sugar and cinnamon and place in a large ziploc bag. Shake each doughnut in the sugar, tap off excess and ENJOY!