My mother didn't allow us sweets very often, so my sisters and I were always on the lookout for a little treat. One day, we discovered these little pieces of chocolate cake in the freezer. Each of us took a piece... and it was a real treat. The next day, the question came up: - Who ate the courgette cake? None of us knew how to answer. If we'd known it had courgettes in it, we probably wouldn't have tasted it. But there... we had to admit it was delicious. Since then, this cake has been a classic in my house. I simply reduced the amount of sugar, as too much gives me migraines. The result is a moist, low-sugar cake with hazelnuts, courgettes and intense dark chocolate... that the whole family loves and that freezes really well. A real treasure to have in your freezer.