This low-fat raspberry mousse cake is a healthier version of the classic dessert. The cake is made with a light and fluffy sponge cake, layered with a low-fat raspberry mousse, and topped with fresh raspberries. The mousse is made with fresh raspberries, low-fat yogurt, and gelatin, giving it a light and airy texture. The cake is then chilled until set, making it a refreshing and delicious dessert that is lower in calories and fat.