Whisk egg and milk with a whisk. Stir in flour and salt. Cover the dough and let it swell for about 10 minutes
Warm apricot jam with approx. 5 tbsp. water and the liqueur and stir until smooth. Put the apricot sauce aside
Coat a small coated pan (approx. 20 cm Ø) with oil. Bake 4 thin crêpes from the dough one after the other until golden brown. Let them cool down
Finely chop walnuts
Put 1 tbsp. aside for sprinkling. Mix remaining nuts and nut nougat cream. Spread the cream on the crêpes. Roll up tightly and chill for approx. 20 minutes
Cut the crêpes into slices and serve with the sauce. Sprinkle with remaining walnuts and decorate with mint if desired
That way they don't stick together: Place the crêpes one by one on plates to cool