Ingredients

Donuts

2 ¼ cups bleached cake flour, plus more for work surface, hands and cutter
2 tsp baking powder
¾ tsp kosher salt
½ tsp ground nutmeg
¼ tsp ground cinnamon
⅔ cup sour cream, room temperature
½ cup granulated sugar
2 large egg yolks, room temperature
1 Tbs unsalted butter, melted and cooled slightly
1 Tbs vegetable oil
1 tsp vanilla extract
vegetable oil as needed for frying

Glaze

4 ½ cups powdered sugar
½ cup unsalted butter, melted
6 Tbs hot water
1 ½ tsp light corn syrup
¼ tsp kosher salt
¼ tsp vanilla extract

Directions

Step 1

Whisk together flour, baking powder, salt, nutmeg, and cinnamon in a bowl until well combined. Whisk together sour cream, granulated sugar, egg yolks, melted butter, oil, and vanilla in a large bowl until well combined. Gradually fold flour mixture into sour cream mixture just until combined. (Dough will be quite soft and sticky.)

Step 2

Cover, and chill in the refrigerator until dough is cold and just slightly firmed, about 2 hours.

Step 3

Turn dough out onto a heavily-floured surface and pat or roll to 3/8- to 1/2-inch thickness, flouring hands or rolling pin as needed. Cut dough using a floured 3 1/2-inch round cutter. Cut holes in the center of the dough circles using a floured 1 1/4-inch round cutter. Transfer dough rings to a parchment-lined baking sheet. Reroll, and cut dough scraps, repeating process as needed.

Step 4

Heat 3 inches of oil in a large Dutch oven over medium heat until a deep-fry thermometer registers 360-365 degrees.

Step 5

Fry 1 to 2 donuts at a time until golden brown and cooked through, 1 to 1 1/2 minutes per side, adjusting heat as necessary to maintain oil temperature. Transfer donuts to a baking sheet lined with paper towels using a spider strainer. Let drain, and cool for 5 minutes.

Step 6

Whisk together powdered sugar, melted butter, hot water, corn syrup, salt, and vanilla in a large bowl for the glaze until smooth and well combined.

Step 7

Place 1 warm donut in the powdered sugar mixture, craggy side up; use a spoon to coat donut completely in the glaze. Remove donut from glaze using two forks placed underneath; let excess drip off, and then transfer donut to a wire rack placed over a rimmed baking sheet. Repeat with remaining donuts and glaze.

Step 8

Let donuts stand until glaze is set before serving, about 25 minutes. Donuts are best enjoyed the same day, but any leftovers can be stored at room temperature in an airtight container for 2 days.