Bring the cream to the boil and melt the finely chopped couverture in it. After cooling, add the nougat and stir until foamy.
Shortbread:
Mix the soft butter with powdered sugar and vanilla until smooth. Add the milk.
Sieve flour with leavening agent well. Twice if possible. Make a shortcrust pastry on the work surface. Only work until the ingredients are bound. Chill the dough for at least 2 hours.
To cut out, work smoothly for a short time and roll out thinly. Use as little flour as possible! Dab the sheet of dough very closely with a fork (see industrial goods).
Cut out the typical round cutter with a butter biscuit and bake at 160 ° C for about 15 minutes until golden yellow.
Do not fill the biscuits too sparingly with the canache.