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If you love the nostalgic taste of a classic powdered sugar doughnut, this easy snack cake brings those familiar flavors together in a wonderfully simple bake.
Instead of individual doughnuts, the batter is baked in a square pan, creating a tender, cakey treat that is easy to slice and share.
The texture is soft and moist, while freshly grated nutmeg gives the cake that distinctive warm, spiced flavor associated with old-fashioned cake doughnuts.
The batter combines everyday ingredients including granulated sugar, eggs, sour cream, melted butter, vanilla extract, and all-purpose flour.
Sour cream contributes to the cake’s rich, tender texture, while melted butter adds a buttery quality that carries beautifully through each bite.
Freshly grated nutmeg provides the main aromatic note, balanced by a small amount of salt, baking powder, and baking soda for the desired lift.
What truly gives this cake its doughnut-inspired character is the finishing touch. While the cake is still slightly warm, its surface is brushed with melted butter and generously covered with sifted confectioner’s sugar.
Several layers of powdered sugar create the thick, snowy coating that makes every slice especially inviting.
With just 15 minutes of preparation and a straightforward baking process, this cake is an appealing choice for breakfast, coffee breaks, casual snacking, or dessert.
Its simple presentation and familiar flavors make it feel comforting and nostalgic without requiring the work of making individual doughnuts.
Old-Fashioned Powdered Sugar Doughnut Cake
Ingredients
Equipment
Method
- Prepare the Oven and Pan: Preheat the oven to 350°F. Spray an 8×8-inch baking pan and line it with parchment paper, leaving long ends extending over the sides so the baked cake can be lifted out easily for neater slicing. A 9×9-inch pan may also be used; if using it, begin checking the cake at 20 minutes.
- Beat the Sugar and Eggs: Place the granulated sugar and eggs in a mixing bowl. Whisk or beat until the mixture becomes pale and foamy.
- Add the Wet Ingredients: Whisk in the sour cream, melted butter, vanilla extract, and freshly grated nutmeg. Continue mixing until the ingredients are fully incorporated and the mixture is smooth.
- Combine the Leavening Ingredients: Fold in the salt, baking powder, and baking soda until they are evenly distributed throughout the mixture.
- Add the Flour: Fold in the all-purpose flour, mixing only until no dry flour remains. Avoid overmixing the batter at this stage.
- Fill the Pan: Transfer the batter to the prepared baking pan and spread it evenly.
- Bake the Cake: Bake for 25–30 minutes, or until a toothpick inserted into the center comes out without wet batter. A few moist crumbs are fine. Check toward the earlier end of the baking range, particularly if your oven runs hot, and avoid overbaking to prevent the cake from becoming dry.
- Cool the Cake: Allow the cake to cool in the pan for 15 minutes. Then use the parchment-paper overhang to lift the cake from the pan and transfer it to a cooling rack to cool further.
- Brush with Butter: When the cake is still slightly warm to the touch, brush the top evenly with the 1 tablespoon melted butter.
- Finish with Powdered Sugar: Immediately sift the confectioner's sugar over the buttered surface. Continue sifting several layers until the cake has a generous, thick coating of powdered sugar.
- Store the Cake: Once finished, keep the cake covered with foil and store it on the counter.
Notes
- Use freshly grated nutmeg for the fullest nutmeg flavor in the finished cake.
- Mix the flour only until the dry ingredients disappear. Overmixing can affect the cake’s tender, cakey texture.
- If using a 9×9-inch pan, begin checking the cake at 20 minutes, as noted in the original recipe.
- The cake should not have wet batter on a toothpick when finished, but moist crumbs are perfectly fine.
- Avoid overbaking, since the cake can become dry.
- For the characteristic powdered-sugar-doughnut finish, apply the melted butter while the cake is still slightly warm, then sift the confectioner’s sugar over it immediately.
- For a thicker powdered sugar coating, sift the sugar in several layers rather than applying it all at once.
- Store the finished cake covered with foil on the counter.
Chef’s Secret
The key to getting the signature powdered-sugar-doughnut finish is timing the topping carefully.
Do not wait until the cake has completely cooled before adding the butter and sugar.
Once the cake has cooled for its initial 15 minutes and is still slightly warm to the touch, brush the melted butter over the surface and immediately sift on the confectioner’s sugar.
The warm, lightly buttered surface helps the sugar adhere and creates the thick, snowy coating that gives this cake its distinctive appearance.
If you want that generously powdered look described in the original recipe, don’t stop after one pass with the sifter—add several thin layers until the surface is evenly and thickly covered.
Serving Suggestions
Slice the cake into neat squares and serve it as a simple breakfast or snack alongside coffee, tea, or another favorite warm beverage.
Its buttery texture, warm nutmeg flavor, and sweet powdered-sugar topping are satisfying without needing an elaborate accompaniment.
For presentation, keep the powdered sugar coating visible and serve the slices with the snowy topping facing upward.
The cake also works nicely as a casual dessert when cut into smaller portions for sharing.
Conclusion
Powdered Sugar Cake Donuts capture the comforting flavor of a classic cake doughnut in an easy-to-bake snack cake.
With its tender crumb, fragrant fresh nutmeg, buttery finish, and generous confectioner’s sugar topping, this simple recipe delivers plenty of nostalgic appeal without the need to make individual doughnuts.
