2: In a container with high edges preferably (more convenient to pour then) pour the 100 g noisette butter.
3: Then add 100 g sweet chestnut purée (crème de marrons), 100 g liquid cream and 2 tablespoons rum, mix well and set aside.
4: In the bowl of a mixer, pour 150 g caster sugar then 3 eggs, and whisk, at medium speed first to mix, and then at high speed, until a white and light mixture is obtained.
5: Slowly reduce the speed, then gently pour the previous mixture.
6: Stop as soon as the mix is homogeneous.
7: Pour the powder mix over it and stir it gently. Your dough is ready.
8: Pour into a buttered cake pan. Note: As always with cakes, if you want a nice opening on top when baking, try this very effective trick.
9: And cook for about 50 minutes, check cooking 5 minutes before the end.