In a large bowl, using a stand mixer with paddle attachment or a hand mixer, cream together softened butter and softened cream cheese for a few minutes.

Divide the dough into 4 equal parts, wrap each in plastic wrap,  flatten into a dish, and refrigerate for at least 8 hours or overnight.

Roll out each piece of dough in a rectangular shape. Add apricot jam and spread it in a thin layer. Then sprinkle over finely chopped walnuts.