Red, White, & Blue Parfaits
You could substitute raspberries or strawberries for the currents
This one is too easy. Make your favorite vanilla or white cupcakes. Frost with your favorite white frosting. Add a few red & blue sprinkles if you like & stick an American flag toothpick in the center (you can find these almost anywhere right now, also available at party stores).
Red, White, & Blue Trifle
This is probably the easiest desserts to make. You can substitute strawberries for raspberries if you like. Or go the more traditional route & add pound cake. This is the perfect summertime dessert.
American Flag Cake
We have this every year & it's always a crowd pleaser. Don't have time to make it homemade? Use boxed cake mix & pre-made frosting & decorate yourself with blueberries & raspberries (or strawberries cut in half).