This cheerful simple boy birthday cake bakes moist golden vanilla cake layers perfect for party celebrations. Fluffy blue vanilla buttercream coats the tender crumb. Vibrant rainbow sprinkles add joyful birthday festivity.
Whisk all-purpose flour, baking powder, and salt together in a bowl. Beat softened butter and sugar until creamy, then incorporate eggs, vanilla, and milk into a smooth batter. Divide evenly into round pans.
Bake until golden and cool completely on wire racks before stacking. Spread colorful buttercream between layers and smooth exterior neatly. For smaller intimate gatherings, try this mini strawberry cake.

Fun Homemade Boy Birthday Cake
Classic moist vanilla birthday layer cake decorated with blue buttercream frosting and sprinkles.
Ingredients
Method
- Heat oven to 350 degrees Fahrenheit and grease two 9-inch round cake pans.
- Whisk flour, baking powder, and salt together in a large bowl.
- Beat butter and sugar with an electric mixer until light and fluffy.
- Add eggs one at a time, followed by vanilla extract and milk, beating well.
- Gradually incorporate dry ingredients on low speed until combined.
- Bake for 28 to 30 minutes until center springs back when lightly pressed.
- Cool cakes, beat buttercream with blue coloring, and frost layers smoothly.