Rainbow Celebration Cake with Cream Cheese Frosting and Candy Inside

Ingredients

• 2¼ cups all-purpose flour
• 1 tablespoon baking powder
• ¼ teaspoon kosher salt
• ¾ cup (6 ounces) unsalted butter, softened
• 1½ cup sugar
• 3 large eggs
• 2 teaspoons vanilla extract
• 1⅓ cup whole milk
• 6 different colors of brightly colored food gel coloring
• Baker’s Joy® brand cooking spray
• 1 cup (8 ounces) unsalted butter, softened
• 1 pound cream cheese, cut into cubes, softened at room temperature
• 2 teaspoons clear vanilla extract, or almond extract
• 7¾ cups (32 ounces) confectioners’ sugar
• Colored sprinkles and/or nonpareils
• 2 to 3 cups various small candies (such as M&M’s® and/or nonpareils) and colorful sprinkles