Colorful Sonic Cake Ideas

Ingredients

• 2 ½ cups (315g) all-purpose flour
• 2 ½ tsp baking powder
• ½ tsp salt
• 1 cup (226g) unsalted butter, softened
• 2 ½ cups (500g) granulated sugar
• 5 large eggs
• 2 tsp vanilla extract
• 1 ¼ cups (295ml) whole milk
• Gel food coloring (blue, red, yellow)
• 1 cup (226g) unsalted butter, softened for buttercream
• 4 cups (480g) powdered sugar
• 2 tbsp (30ml) heavy cream
• 1 tsp vanilla extract for buttercream
• Pinch of salt for buttercream