This no-bake raspberry mousse cake is a quick and easy dessert that is perfect for any occasion. The cake is made with a simple graham cracker crust, a creamy raspberry mousse filling, and topped with fresh raspberries. The best part is that it only takes about 20 minutes to prepare and can be made ahead of time. To make the raspberry mousse, you will need fresh raspberries, heavy cream, sugar, and gelatin. Simply blend the raspberries until smooth, whip the cream, and then mix everything together. Pour the mixture into the prepared crust and refrigerate until set. This cake is light, refreshing, and bursting with raspberry flavor. It's the perfect dessert for any summer gathering or special occasion.