Make cupcakes using you boxed cake mix according to the package directions. At least one hour before serving you shortcake, slice your strawberries and sprinkle with sugar. Sprinkle with enough to lightly coat the berries. Now let it sit and you strawberries will get sweet and juicy.

Cup each cupcake in half to serve. Put a spoonful of whipped cream on the bottom half followed by some strawberries. The place the top half on top and do more whipped cream and strawberries. Add a few fresh blueberries on top is desired to make a red, white and blue dessert.