Pour the peanuts onto a baking tray and bake at 150°C for 15 minutes. Pour the powdered sugar into a saucepan and create a caramel. Pour onto a sheet of parchment paper and leave to cool. Place the peanuts and chopped caramel in the bowl of a blender and blend until praline is obtained. Store in a closed container.
For the choux pastry ✔60g water ✔60g milk ✔70g flour ✔55g butter ✔Salt ✔1 teaspoon sugar ✔2 or 3 eggs (depending on size)
Heat the water, milk, butter, salt and sugar in a saucepan. Remove from heat and add flour all at once. Mix well to dry out the dough for 2 to 3 minutes. Gradually add the beaten eggs, mixing well between each egg. Poach the puffs in a circular pattern on a baking sheet lined with silpain. Sprinkle with chopped peanuts and powdered sugar. Bake at 170°C for 35 to 40 minutes (time may vary according to oven). Leave to cool.
Heat the milk in a saucepan. In a bowl, mix the yolks, sugar and cornflour. Pour over the hot milk. Return to the saucepan and heat, stirring constantly, until the cream thickens. Remove from heat and add gelatin and butter (20g). Place in a cool place. Work the butter into the cooled cream, then add the praline. Mix well.
Assembly Cut out the choux, poach a little praline with a piping bag and then the mousseline cream with a fluted tip. Place the caps on top and sprinkle with powdered sugar. Decorate with peanuts.