4th of July Cake

Ingredients

• 2 3/4 cups cake flour 305 grams
• 1 tablespoon baking powder
• 3/4 teaspoon salt
• 1 cup buttermilk 240 ml room temperature
• 2 teaspoons pure vanilla extract or clear
• 1 cup unsalted butter 230 grams room temperature
• 1 3/4 cups granulated sugar 350 grams
• 5 large egg whites room temperature
• 1/3 cup blue sprinkles red white and, optional
• 1 tablespoon Cake or regular flour optional
• 2 cups butter softened
• 6 cups powdered sugar 1 ½ pounds
• 2 teaspoons vanilla extract clear
• 2 tablespoons milk or cream optional
• red food coloring
• 1/2 cup white chocolate melts
• 3 tablespoons heavy cream
• food coloring navy blue
• pastry or ziplock bags optional