Fresh fruit for garnish- strawberries, blueberries, kiwi, grapes,
etc.
Cut a 3-4 inch thick cross section from the watermelon. Remove
the rind by cutting four slits through the rind without cutting
the flesh. Cut between the white rind portion and the red flesh
to remove the rind. Pat watermelon dry with paper towels. Fold
together whipped topping and yogurt. Place watermelon cake on
a flat serving plate. Frost top and sides with whipped topping
mixture. Decorate as desired with fresh fruit. Refrigerate until
ready to serve. Can be stored several hours or overnight. Cut
into cake-shaped wedges to serve.