Rainbow Cupcakes with Vanilla Cloud My Brightest Bake

Ingredients

• 1 ½ cups (192g) all-purpose flour, plus more for dusting the pans
• 1 ½ teaspoons baking powder
• ¼ teaspoon baking soda
• ½ teaspoon salt
• ½ cup (1 stick, 113g) unsalted butter, softened
• ¾ cup (150g) granulated sugar
• 2 large eggs, at room temperature
• 1 teaspoon vanilla extract
• ¾ cup (177ml) buttermilk, at room temperature
• Gel food colouring (red, orange, yellow, green, blue, purple)
• Sprinkles (optional, for decorating)
• 1 cup (2 sticks, 226g) unsalted butter, softened
• 4 cups (480g) powdered sugar, sifted
• ¼ cup (60ml) heavy cream
• 2 teaspoons vanilla extract
• Pinch of salt