01 -
Use a spatula to blend the soft butter, sugar, and salt together. Add the egg yolks and mix smoothly. Sift the flour and baking powder into the mixture and stir until it's even. Set your oven to 180°C to preheat.
02 -
Flatten the dough using two sheets of baking paper. Aim for 7 mm thickness. Pop it into the fridge for about 20 minutes to chill.
03 -
Cut the dough into 6 cm circles that match your molds. Roll out any leftover scraps and repeat until it’s all used. Set the pieces into molds and bake for 17-20 minutes. Wait for them to cool fully inside the molds.
04 -
Microwave the cream to heat it. In a small pot, add the water and sprinkle the sugar over it. Cook it until it’s a caramel color. Gradually mix in the hot cream in three parts, keeping it warm between each addition. After 5 minutes, stir in the cold butter and salt. Move the caramel into a piping bag.
05 -
Pipe some caramel into the cooled biscuit centers. Chill them in the fridge for an hour so the caramel sets firm.
06 -
Blend roasted hazelnuts and powdered sugar until smooth (add a little grape seed oil if necessary). Stir in melted chocolate, blend briefly again, and transfer it into a piping bag.
07 -
Pipe around 15 g of gianduja over each sablé biscuit while they’re still in the molds. Add roasted hazelnut halves on top and refrigerate. Sprinkle a tiny bit of sea salt before serving.