Round Blue Cake
A vibrant round blue cake with a classic vanilla base and blue buttercream, perfect for birthdays, baby showers, and special celebrations.
Equipment
- 2 8-inch round cake pans Required for baking cake layers.
- 2 parchment paper circles For lining cake pans.
- 1 Electric Mixer To cream butter and sugar.
- 3 Mixing bowls (various sizes) for mixing ingredients.
- 1 Set measuring cups and spoons For accurate ingredient measurementsz
- 1 Cooling Rack For cooling cakes.
- 1 Offset Spatula For smoothing frosting.
- 1 Bench Scraper For smoothing cake sides.
- 1 Cake board For assembly and serving.
- 1 Piping bag and tips For decorative frosting application.
- 1 Cake turntable Optional for easier frosting application.
Ingredients
Cake Batter:
- 2.75 cups all-purpose flour 2¾ cups all-purpose flour
- 1.5 tsp baking powder 1½ teaspoons baking powder
- 0.75 tsp baking soda ¾ teaspoon baking soda
- 0.75 tsp salt ¾ teaspoon salt
- 1 cup unsalted butter softened Unsalted butter, softened
- 1.75 cups granulated sugar Granulated sugar
- 4 large eggs room temperature Eggs at room temperature
- 2 tsp pure vanilla extract Pure vanilla extract
- 1 cup buttermilk room temperature Buttermilk at room temperature
Blue Buttercream Frosting:
- 1.5 cups unsalted butter softened Unsalted butter, softened
- 6 cups powdered sugar sifted Powdered sugar, sifted
- 3-4 tbsp heavy cream or milk Heavy cream or milk as needed
- 2 tsp pure vanilla extract Pure vanilla extract
- 0.25 tsp salt Salt
- Blue food coloring gel Recommended blue gel food coloring
- 2-3 tbsp butterfly pea powder For natural blue color optional
Instructions
- Preheat oven to 350°F and prepare cake pans by greasing them and lining bottoms with parchment paper.
- In a bowl, whisk together flour, baking powder, baking soda, and salt.2.75 cups all-purpose flour 2¾ cups all-purpose flour, 1.5 tsp baking powder 1½ teaspoons baking powder, 0.75 tsp baking soda ¾ teaspoon baking soda, 0.75 tsp salt ¾ teaspoon salt
- In a large bowl, cream unsalted butter and granulated sugar until light and fluffy.1 cup unsalted butter, 1.75 cups granulated sugar Granulated sugar
- Add eggs one at a time, beating well after each addition, then mix in vanilla extract.4 large eggs room temperature Eggs at room temperature, 2 tsp pure vanilla extract Pure vanilla extract
- Alternately add the dry ingredients and buttermilk to the creamed mixture, starting and ending with the dry ingredients.1 cup buttermilk room temperature Buttermilk at room temperature
- Divide the batter evenly into the prepared pans and bake for 25-30 minutes until a toothpick comes out clean.
- Allow cakes to cool in pans for 15 minutes, then invert onto a cooling rack to cool completely.
- For the frosting, beat unsalted butter until creamy, then gradually add powdered sugar, heavy cream, vanilla extract, and salt.1.5 cups unsalted butter, 6 cups powdered sugar, 3-4 tbsp heavy cream or milk Heavy cream or milk as needed, 2 tsp pure vanilla extract Pure vanilla extract, 0.25 tsp salt Salt
- Gradually add blue food coloring (or optional butterfly pea powder) to achieve the desired blue shade.Blue food coloring gel Recommended blue gel food coloring, 2-3 tbsp butterfly pea powder For natural blue color
- Level the cooled cake layers, apply a thin crumb coat over the entire cake, and refrigerate for 20-30 minutes.
- Apply the final layer of frosting smoothly with an offset spatula; decorate as desired.
Notes
- Ensure all ingredients are at room temperature for best results.
- Avoid overmixing the batter to maintain a light and fluffy texture.
- Cool cakes completely before frosting to prevent melting.
- Adjust blue food coloring gradually to achieve the perfect shade.
- Use butterfly pea powder for a natural, pastel blue hue if desired.