Rugelach can be filled with everything from chocolate to apricot jam, but prune is among the most classic filling choices, for good reason: the dried fruit counters the tanginess from the cream cheese in the pastry dough. Starting with Prune Bits makes the filling even easier to make.
227 g / 16 tablespoons unsalted butter, cold and cubed
227 g / 8 ounces cream cheese
6 g / 1 1/2 teaspoons kosher salt
270 g / 2 cups all-purpose flour, plus more for dusting
30 g / 1/4 cup blanched almonds, toasted
35 g / 1/2 cup breadcrumbs
80 g / 1/3 cup sugar
1 g / 1/2 teaspoon cinnamon
50 g / 1 each egg, beaten with a splash of water
In a food processor, pulse the butter, cream cheese, flour, and salt together until a crumbly dough forms. Turn the dough out onto a lightly floured work surface and gather it into a ball. Divide in half and shape each half into a disk. Wrap each disk in plastic wrap and refrigerate until chilled, 2 hours or overnight.
In a food processor, process the almonds until ground. Transfer the nuts to a bowl, and reassemble the food processor.
Pour enough boiling water over the dried plums or bits to cover and let sit for 5 minutes. Drain and purée in the food processor. Pulse in the breadcrumbs, sugar, and cinnamon.
Working with one disk at a time, roll the dough into a 10-in. [25 cm] circle 1/4 to 1/8-in. [.3 to .6-cm] thick. Brush the edges of the dough with the egg wash. Put half of the prune filling in the center and spread it out just before the egg-brushed edges. Sprinkle half of the ground almonds over the filling.
With a knife or pizza cutter, cut the circle into 16 wedges. To shape the rugelach, starting at the blunt end of each wedge, roll up toward the tip. Repeat with the remaining dough and filling.
Line 2 baking sheets with parchment paper. Space the rugelach 2 inches apart on the baking sheets. Cover and refrigerate for at least one hour or overnight.
Preheat an oven to 325F [165C]. Brush the rugelach with egg wash and bake until golden brown and baked through, 30 to 35 minutes. Transfer to wire racks and let cool completely.