This no-bake raspberry mousse cake is a quick and easy dessert that is perfect for hot summer days. The cake is made with a graham cracker crust, layered with a creamy raspberry mousse, and topped with fresh raspberries. The raspberry mousse is made with fresh raspberries, whipped cream, and gelatin, giving it a light and airy texture. The graham cracker crust is made with graham cracker crumbs, butter, and sugar, giving it a sweet and crunchy texture. This cake is sure to be a hit with its delicious taste and easy preparation.