Pear-Cranberry Linzer Tart

Linzer dough is traditionally made with almonds, but the walnuts here are sublime with the fruit. It’s important to mix this dough very well and chill it thoroughly; it’s more like a cookie dough than a pastry dough. The cooked egg yolks give the dough a cakey quality that’s unequalled by any substitute. The raw yolks bind the dough and add extra richness.

For the dough:

• 4 oz. (1 cup) walnuts, lightly toasted
• 1/2 cup granulated sugar
• 8 oz. (1-3/4 cups) all-purpose flour
• 1 tsp. ground cinnamon
• 1 tsp. finely grated lemon zest
• 1/2 tsp. table salt
• 1/8 teaspoon ground cloves
• 2 hard-cooked egg yolks, crumbled
• 8 oz. (1 cup) cold unsalted butter, cut into 1/2-inch pieces
• 2 raw egg yolks
• 1/2 tsp. pure vanilla extract

For the filling:

• 2 lb. ripe pears (preferably Comice or Bosc), peeled, cored, and cut into 1/3-inch slices (about 4 cups)
• 6 Tbs. all-purpose flour
• 1 cup fresh or frozen cranberries, picked through and rinsed
• 1/2 cup granulated sugar

To finish:

• 1 egg yolk
• 1/4 cup heavy cream or whole milk

Make the dough:

In a food processor, grind the walnuts w ith the sugar to a sandy texture. Add the flour, cinnamon, lemon zest, salt, cloves, and crumbled hard-cooked egg yolks. Pulse briefly to combine. Add the butter and pulse until the dough starts to come together and looks clumpy. Add the raw yolks and vanilla and pulse until well combined. The dough will be sticky and moist, more like a cookie dough than a pastry dough. Cut the dough in half (each piece should be about 12-3/4 ounces), set each half on a large piece of plastic, and shape each into a flat disk, using the plastic to help you flatten. Wrap each disk in its plastic and refrigerate for at least 1 hour.

Assemble the tart:

On a floured work surface, roll each disk of dough into an 11-inch round about 1/4 inch thick. Put one round on a plate and refrigerate, uncovered. Fit the other round into a 9-inch fluted tart pan with a removable bottom. Fold the excess dough into the sides of the pan and press to get an edge flush with the top of the pan, about 1/3 inch thick. Sprinkle 2 Tbs. of the flour on the bottom of the tart and spread to evenly cover. Toss the pears and cranberries with the remaining 1/4 cup flour. Arrange the fruit in the tart shell so that the pears lie as flat as possible and there are some berries showing on top. Scrape any remaining flour over the fruit and sprinkle with the sugar. 

Take the other piece of dough from the refrigerator and cut it into eight 1-inch-wide strips. (I use a ruler and a ravioli cutter or a pastry cutter to get beautiful zigzag-edged strips). Arrange four strips, evenly spaced, over the top of the tart.  Then, on a sharp diagonal to the first four, set the other four strips on top, so that the overlapping layers make diamond shaped windows.  Trim the ends of the strips and press them into the edges of the tart. 

Bake the tart:

Position an oven rack on the bottom rung. Line a heavy rimmed baking sheet with foil and set it on the rack. Heat the oven to 350°F. Whisk the egg yolk with the cream or milk. Brush the tart's lattice top with the egg glaze. Bake on the baking sheet until the pastry is golden brown, 45 min. to 1-1/4 hours. Let cool on a rack for 1 hour and serve slightly warm.