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Powdered Sugar Donut Cake

Powdered Sugar Donut Cake

Heavy on the butter and topped with powdered sugar, this cake has all the flavors of your favorite cake donut in a convenient square shape.
Course cake
Cuisine American
Keyword cake pan, donuts, nutmeg, powdered sugar, sour cream
Prep Time 10 minutes
Cook Time 30 minutes
Additional Time 15 minutes
Total Time 55 minutes
Servings 8 servings


  • 3/4 cup [150 g] granulated sugar
  • 2 large eggs
  • 1 cup [220 g] sour cream
  • 1/2 cup [113 g or 1 stick] unsalted butter melted
  • 1 1/4 teaspoons freshly grated nutmeg
  • 1 teaspoon pure vanilla extract
  • 3/4 teaspoon kosher salt
  • 1 1/2 cups [190 g] all-purpose flour
  • 1 1/2 teaspoons baking powder
  • 1/4 teaspoon baking soda


  • 1 tablespoon unsalted butter melted
  • 3 tablespoons confectioners' sugar


For the cake

  • Position an oven rack to the center of your oven and preheat the oven to 35oF [180C]. Butter or coat an 8-inch square baking pan with nonstick spray. Line the pan with a strip of parchment paper that hangs over two of the edges. 
  • In a large bowl, whisk the granulated sugar and eggs until pale and foamy, about 1 minute. Add the sour cream, butter, nutmeg, vanilla, and salt. Whisk until smooth and emulsified. 
  • Add the flour, baking powder, and baking soda. Whisk until well-combined and smooth. 
  • Pour the batter into the pan and bake the cake until puffed and golden, and a skewer inserted into the center comes out clean, 25 to 35 minutes. Set the pan on a rack to cool for about 15 minutes. Then use the parchment paper to lift the cake out of the pan and set it on to the rack to cool almost completely.

To Assemble

  • While the cake is just warm to the touch, brush the top with the melted butter and dust with the confectioners' sugar. you should have a nice thick layer of confectioners' sugar - more than you think might be necessary. (Store the cake, covered, at room temperature for up to three days. The cake will absorb the sugar on top, so it might need a fresh dusting of confectioners' sugar after the second day.)


This recipe is reprinted from the cookbook, Snacking Cakes by Yossy Arefi.