Yes, you can have your cake and eat it too -- if you opt for a variety with fewer calories, such as angel food cake. One slice contains about 120 to 140 calories and virtually no fat, unlike traditional yellow cake, which comes in at 300 to 400 calories per slice (and that's without frosting). You can make your own angel food cake from scratch or keep it simple by picking up a pre-made one in the bakery section of your local grocery store. For a refreshing summer treat, add some sliced strawberries along with fat-free whipped topping (keep the latter in the freezer, then transfer to the cooler as you're leaving to give it time to defrost). Though you'll need a cooler for this dessert to make sure the toppings stay fresh, keep the angel food cake stored separately so it doesn't get wet and soggy before you're ready to serve and enjoy.