Maine Potato Doughnuts | Maine Potato Board

Ingredients

• 3 tablespoons unsalted butter, softened
• 3/4 cup granulated sugar
• 1 large egg, at room temperature
• 1 1/2 teaspoons vanilla extract
• 1 cup lightly packed mashed russet or Yukon Gold potatoes (see “Additional Notes,” below)
• 1/4 cup buttermilk, at room temperature
• 2 cups all-purpose flour, plus more for work surface
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• 1/2 teaspoon table salt
• 1/2 teaspoon freshly grated nutmeg
• Vegetable shortening or vegetable oil for frying (see “Additional Notes,” below)
• Cinnamon sugar, for dusting (optional)