Ingredients:
- 2 1/4 cups (280g) all-purpose flour, sifted
- 1 teaspoon baking powder
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 1 cup (227g) unsalted butter, softened
- 1 3/4 cups (350g) granulated sugar
- 3 large eggs
- 1 teaspoon vanilla extract
- 1 cup (240ml) buttermilk
- 6 ounces (170g) good quality white chocolate, melted and cooled slightly
- 1 cup (227g) unsalted butter, softened
- 3 cups (360g) powdered sugar, sifted
- 4 ounces (113g) good quality white chocolate, melted and cooled slightly
- 1/4 cup (60ml) heavy cream
- 1 teaspoon vanilla extract
- Pinch of salt
Instructions:
- Preheat oven to 350°F (175°C). Grease and flour two 9-inch round cake pans. Line the bottoms with parchment paper rounds.
- In a medium bowl, whisk together flour, baking powder, baking soda, and salt.
- In a large bowl, cream together softened butter and granulated sugar until light and fluffy using an electric mixer.
- Beat in eggs one at a time, then stir in vanilla extract.
- Gradually beat in the cooled, melted white chocolate. Be careful not to overmix.
- Gradually add the dry ingredients to the wet ingredients, alternating with the buttermilk, beginning and ending with the dry ingredients. Mix until just combined. Do not overmix!
- Divide batter evenly between the prepared cake pans. Bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
- Let the cakes cool in the pans for 10 minutes before inverting them onto a wire rack to cool completely.
- In a large bowl, beat softened butter until smooth and creamy. Gradually add powdered sugar, beating until light and fluffy.
- Beat in the cooled, melted white chocolate, heavy cream, vanilla extract, and salt. Beat until smooth and creamy.
- Once the cakes are completely cooled, level them if necessary. Place one cake layer on a serving plate or cake stand. Spread with a generous layer of frosting. Top with the second cake layer.
- Frost the entire cake with the remaining frosting. Decorate as desired (sprinkles, chocolate shavings, etc.).
- Chill the frosted cake for at least 30 minutes to allow the frosting to set.