Ingredients
Equipment
Method
Preparation
- Preheat your oven to 350°F (175°C) and prepare an 8x8 inch baking pan with parchment paper.
- In a small bowl, whisk together 1.5 cups of cake flour, 1.5 teaspoons of baking powder, 0.5 teaspoon of baking soda, and 0.5 teaspoon of salt.
- In a large mixing bowl, beat 0.5 cups of cooled browned butter and 1 cup of granulated sugar on high speed until creamy, about 3 to 5 minutes.
- Add 3 egg whites and mix on medium-high for about 2 minutes until fluffy.
- Gently fold in 0.75 cups of sour cream and 1 teaspoon of vanilla extract until combined.
- Gradually mix in the dry ingredients followed by 0.5 cups of whole milk until just combined.
- Pour the batter into the prepared pan and bake for approximately 35 minutes, or until a toothpick comes out clean.
- Allow the cake to cool completely in the pan on a wire rack.
- Beat 0.5 cups of unsalted butter until smooth, gradually add 3-4 cups of confectioners' sugar, mixing on low speed.
- Mix in 1 tablespoon of milk and 1 teaspoon of vanilla until fluffy. Add gel food coloring to achieve desired robin egg blue.
- Spread the blue buttercream over the cooled cake evenly and generously.
- Combine cocoa powder with a splash of vanilla and flick onto the cake for a speckled effect.
- Slice the cake into pieces and serve with whipped cream or fresh berries.
Nutrition
Notes
Allow the cake to cool completely before frosting to prevent melting.
