Rugelach

Name: Rugelach
Ingredients: 16 tablespoons (227g) unsalted butter at room temperature; 6 ounces (170g) cream cheese at room temperature; 1/3 cup (74g) sour cream; 1/2 teaspoon salt; 2 cups (241g) King Arthur Unbleached All-Purp; 1/2 cup (106g) brown sugar packed; 1 cup (113g) walnuts chopped; 1/2 cup (85g) dried cranberries raisins or currants; 1 tablespoon cinnamon; water for brushing dough; granulated sugar or coarse sparkling sugar; milk or cream