4th of July Cake

Name: 4th of July Cake
Prep time: 30 min
Cook time: 30 min
Total time: 1 h
Cuisine: American
Ingredients: 2 3/4 cups cake flour ((305 grams)); 1 tbsp baking powder; 3/4 tsp salt; 1 cup buttermilk ((240 ml) room temperature ); 2 tsp clear or pure vanilla extract; 1 cup unsalted butter ((230 grams) room temperature ); 1 3/4 cup granulated sugar (350 grams); 5 large egg whites (room temperature); ⅓ cup red white and blue sprinkles (optional); 1 tbsp cake or regular flour (optional); 2 cups butter (softened); 6 cups powdered sugar (1 ½ pounds); 2 tsp clear vanilla extract; 2 tbsp milk or cream (optional); red food coloring; ½ cup white chocolate melts; 3 tbsp heavy cream; navy blue food coloring; pastry or ziplock bags (optional); chocolate covered strawberries; red, white, and blue cookie pops; extra sprinkles (optional)