Name: Classic Vanilla Birthday Cake
Prep time: 30 min
Cook time: 30 min
Total time: 1 h
Ingredients: 2 1/2 cups all-purpose flour; 2 teaspoons baking powder; 1/2 teaspoon fine salt; 1 cup unsalted butter, softened; 1 1/2 cups granulated sugar; 4 large eggs, room temperature; 4 teaspoons pure vanilla extract; 1 cup buttermilk, room temperature; 2 1/2 sticks unsalted butter, softened; 5 cups confectioners' sugar; 2 1/2 teaspoons vanilla extract; 4 tablespoons cream; A heaping 1/4 teaspoon salt

The kitchen table was buried under a drift of powdered sugar and torn wrapping paper by noon on Saturday. I still don’t measure the vanilla extract for this vanilla birthday cake, and I am not going to start now.

My youngest wanted a simple double layer with white frosting for his eighth year. We kept it classic because that is what actually gets eaten down to the last crumb.

Prep: 30 minutes · Cook: 30 minutes · Total: about 2 hours (with cooling) · Serves: 10

How do you make a vanilla birthday cake from scratch? Bake a buttermilk-enriched batter in two rounds at 350°F until a tester comes out clean.

Cool the layers completely before whipping up a rich butter and cream frosting. Flip the bottom layer flat-side down, spread a generous middle, and stack the top evenly.

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The Ingredient List

2 1/2 cups all-purpose flour
2 teaspoons baking powder
1/2 teaspoon fine salt
1 cup unsalted butter, softened
1 1/2 cups granulated sugar
4 large eggs, room temperature
4 teaspoons pure vanilla extract
1 cup buttermilk, room temperature
2 1/2 sticks unsalted butter, softened
5 cups confectioners’ sugar
2 1/2 teaspoons vanilla extract
4 tablespoons cream
A heaping 1/4 teaspoon salt

Ingredient Notes

Unsalted butter lets you control the exact amount of salt going into both the batter and the frosting. Make sure it is truly soft to the touch before you start mixing, or it will never cream properly with the sugar.

Buttermilk brings a subtle tang that cuts through the heavy sweetness of the sugar. If you use regular milk instead, the crumb loses that tender rise and signature structure.

Pure vanilla extract gives the cake its authentic bakery aroma and warm background flavor. Avoid imitation extracts if you can, because they leave a harsh aftertaste in baked goods.

How I Make It

Whisk dry ingredients. Combine the flour, baking powder, and fine salt in a medium bowl until blended, until no small clumps remain in the mix.
Cream butter and sugar. Beat the softened butter and granulated sugar in a large bowl on medium speed until the mixture looks pale and fluffy, about 4 minutes.
Add eggs and vanilla. Beat in the room-temperature eggs one at a time, then pour in the vanilla extract, beating until the batter is smooth.
Alternate additions. Mix in the flour blend and the buttermilk in alternating batches on low speed until the batter is uniform, about 2 minutes.
Bake the layers. Divide the batter evenly between two prepared 9-inch pans and bake at 350°F for 28 to 30 minutes, until a tester comes out clean.
Cool completely. Let the pans sit for 5 to 10 minutes, then turn out the layers onto wire racks to cool completely before frosting.
Whip the buttercream. Beat the softened butter, confectioners’ sugar, vanilla, cream, and salt until light and fluffy, about 5 minutes.
Assemble the cake. Flip the bottom layer domed-side down on a plate, spread a thick layer of frosting, and top with the second layer.

Make-Ahead and Leftovers

Store leftover cake under a cake dome at room temperature for up to two days. If your kitchen runs warm, move the cake to the refrigerator so the butter-based frosting stays firm.

Bring refrigerated slices back to room temperature on the counter for about thirty minutes before serving. Cold buttercream tastes stiff and hides the vanilla flavor.

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