This cake is wonderful for a 4th of July party. Prepare one white cake from a mix. Grease a 13 x 9 inch cake pan with butter and dust with flour. Pour cake batter into pan and bake following directions on box. Cool cake in pan for 15 minutes. Make holes in cake every 1/2 inch using large fork.

Prepare any package of red Jello. With a measuring cup, scoop Jello out of bowl and pour over cake. Put cake in refrigerator to chill, about 3-4 hours.

Place about 1 inch of warm water in sink. Dip just the bottom of pan into water for 10 seconds. Remove cake from pan. Frost top and sides of cake with Cool Whip. Arrange sliced strawberries in one row, arrange tiny marshmallows in another row and alternate until top of cake is covered, except for upper left corner where you will place about 5 rows of blueberries. This cake should resemble the American Flag.