Vibrant Layered Rainbow Cake

Ingredients:

For the Cake:

2 ½ cups all-purpose flour
2 ½ teaspoons baking powder
½ teaspoon salt
1 ½ cups granulated sugar
1 cup unsalted butter, softened
4 large eggs
1 cup milk
2 teaspoons vanilla extract
Food coloring (red, orange, yellow, green, blue, purple)
For the Buttercream Frosting:

1 ½ cups unsalted butter, softened
6 cups powdered sugar
½ cup heavy cream
2 teaspoons vanilla extract
Pinch of salt
For the Decoration:

Colorful sprinkles
Edible glitter (optional)
Fresh fruit or candy (optional)
Directions:
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