Holy sheep everyone! Potatoes make the most amazing doughnuts. I used the Baked Sugar Doughnuts (Bread Machine) recipe from food.com. I tossed everything in my bread machine (including mashed potatoes! lol), mixed it up, used my cookie scoop to make doughnut holes, sprinkled them with cinnamon-sugar before baking, 8 mins at 375, and YUM! They are the lightest and most tender doughnuts I've ever made. I should've made a half batch though! We'll be eating doughnuts for the next week!