Ingredients

  • ½ cup white sugar
  • 2 ½ tablespoons butter, at room temperature
  • 2large egg yolks
  • 2 ¼ cups all-purpose flour
  • 1 ½ teaspoons baking powder
  • 1 teaspoon salt
  • ½ cup sour cream
  • ⅓ cup white sugar
  • 1 teaspoon cinnamon
  • 2 tablespoons butter, melted, or as needed
  • Directions

  • Step 1

    Press 1/2 cup white sugar and butter together in a bowl until crumbly. Add egg yolks and stir until well combined.

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  • Step 2

    Sift flour, baking powder, and salt into a separate bowl. Place 1/3 of the flour mixture and 1/2 the sour cream into the sugar-egg mixture; stir until combined. Mix in the remaining flour and sour cream. Refrigerate dough until ready to use.

  • Step 3

    Mix 1/3 cup sugar and cinnamon together in a bowl.

  • Step 4

    Roll dough out onto a lightly floured work surface to 1/2-inch thick. Cut 9 large circles in the dough; cut a small circle out of the center of each large circle to create doughnut shapes.

  • Step 5

    Preheat an air fryer to 350 degrees F (175 degrees C).

  • Step 6

    Brush 1/2 of the melted butter over both sides of the doughnuts.

  • Step 7

    Place 1/2 doughnuts into the basket of the air fryer; cook for 8 minutes. Paint cooked donuts with the remaining melted butter and immediately dip into the cinnamon-sugar mixture. Repeat with the remaining doughnuts.

  • Cook's Note:

    Cook time may vary by the strength and capacity of your air fryer; check and adjust accordingly.

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