Name: American Flag Cake
Prep time: 20 min
Cook time: 35 min
Yield: 16 servings
Ingredients: 3/4 cup unsalted butter; 1 1/3 cups sugar; 4 large egg whites; 2 teaspoons vanilla extract; 1 cup whole milk; 2 1/4 cups flour; 2 1/4 teaspoons baking powder; 1/2 teaspoon salt; 16 ounces Cool Whip ((Homemade Version)); 1 pint blueberries; 2 pounds strawberries (, halved)