3 egg yolks 1 cup powdered sugar 1 teaspoon ground cardamom 1 teaspoon vanilla extract 3/4 cup chopped walnuts slivered pistachios (optional) Preheat the oven to 325 degrees F (165 degrees C). Line a baking sheet with parchment paper. Mix together yolks, sugar, cardamom, and vanilla in a bowl with an electric mixer at high speed until creamy and light in color, about 5 minutes. Stir…