Learn How To Bake The Perfect Cake

The Perfect White Cake

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The Perfect White Cake

This is the PERFECT white cake with a soft texture, moist crumb, and wonderful vanilla flavor; plus, it tastes incredible with creamy vanilla buttercream. Cake flour, egg whites, and sour cream are the secrets to the best texture. The cake batter is my gold standard and I use it as the base for many other cake flavors including strawberry cake, coconut cake, pistachio cake, burnt sugar caramel cake, and more.

Ingredients

  • 2 and 1/2 cups (295g) cake flour (spooned & leveled)
  • 2 teaspoons baking powder
  • 1/2 teaspoon baking soda
  • 1 teaspoon salt
  • 3/4 cup (12 Tbsp; 170g) unsalted butter, softened to room temperature
  • 1 and 3/4 cups (350g) granulated sugar
  • 5 large egg whites, at room temperature
  • 1/2 cup (120g) full fat sour cream, at room temperature*
  • 1 Tablespoon pure vanilla extract (yes, Tbsp!)
  • 1 cup (240ml) whole milk, at room temperature*
  • Vanilla Buttercream
  • 1 and 1/4 cups (282g) unsalted butter, softened to room temperature
  • 5 cups (600g) confectioners’ sugar
  • 1/3 cup (80ml) heavy cream
  • 2 teaspoons pure vanilla extract (or use clear imitation vanilla extract for stark white frosting)
  • 1/8 teaspoon salt
  • optional: sprinkles, for garnish

Directions

  • Preheat the oven to 350°F (177°C). Grease two 9-inch round cake pans, line with parchment paper rounds, then grease the parchment paper. Parchment paper helps the cakes seamlessly release from the pans. (If it’s helpful, see this parchment paper rounds for cakes video & post.)
  • Whisk the cake flour, baking powder, baking soda, and salt together. Set aside.
  • Using a handheld or stand mixer fitted with a paddle or whisk attachment, beat the butter and sugar together on high speed until light and creamy—about 3 full minutes. Scrape down the sides of the bowl with a silicone spatula as needed. Add the egg whites and beat on high speed until combined, about 2 minutes. Then beat in the sour cream and vanilla extract. Scrape down the sides and bottom of the bowl as needed. Add the dry ingredients and mix on low speed until just incorporated. With the mixer still running on low, slowly pour in the milk until combined. Do not overmix. You may need to whisk it all by hand to make sure there are no lumps at the bottom of the bowl. The batter will be slightly thick.
  • Pour batter evenly into cake pans. Bake for around 24–25 minutes or until the cakes are baked through. To test for doneness, insert a toothpick into the center of the cake. If it comes out clean, it is done. Allow cakes to cool in the pans set on a cooling rack for 1 hour, then remove them from the pans and let the cakes finish cooling directly on the rack. The cakes must be completely cool before frosting and assembling.
  • Make the frosting: In a large bowl using a handheld mixer or stand mixer fitted with a whisk or paddle attachment, beat the butter on medium speed until creamy—about 2 minutes. Add confectioners’ sugar, cream, vanilla extract, and salt with the mixer running on low speed. Increase to high speed and beat for 3 full minutes. Add more confectioners’ sugar if frosting is too thin, more cream if frosting is too thick, or a pinch more salt if frosting is too sweet.
  • Assemble and frost: First, using a large serrated knife, slice a thin layer off the tops of the cakes to create a flat surface. Discard (or crumble over ice cream!). Place one cake layer on your cake stand, cake turntable, or serving plate. Spread 3/4 to 1 cup of vanilla buttercream in an even layer on top. Top with the second cake layer, upside down, and spread the top and sides with 1 cup of buttercream in a very thin layer to make the crumb coat. If desired, run a bench scraper around the cake to help smooth out the frosting on the sides. Refrigerate the cake until the crumb coat has set, about 20 minutes. Finish by spreading the top and sides with the remaining buttercream. Decorate top of cake with sprinkles, if desired.
  • Slice and serve immediately or keep at room temperature for a few hours before serving.
  • Cover leftover cake tightly and store in the refrigerator for up to 5 days. I like using a cake carrier for storing and transporting.

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