3 walnut cookies salt citrus Recipes

walnut pieces, unsalted butter, at room temperature, sugar, zest of 1/2 lemon and 1/4 orange, egg yolks, flour , sifted, flake salt , such as maldon

jam filling, seedless strawberry jam, limoncello liqueur, cookies, flour, baking powder, salt, butter, room temperature, white sugar, egg yolks (yolks only !), grated lemon zest, fresh lemon juice, lemon extract, vanilla extract, chopped pecans or walnuts, optional, powdered sugar , for dusting the tops of the cookies after baking