Quick Coconut Filling for Cakes

✨Ingredients (Cake) * 3 cups cake flour * 2 tsp baking powder * ½ tsp baking soda * 1 tsp salt * 1 cup butter (soft) * 1½ cups sugar * 5 egg whites * ⅓ cup sour cream * 2 tsp vanilla * 1 tsp coconut extract * 1 cup coconut milk * 1 cup shredded coconut ✨Coconut Filling * 1 can sw