RHUBARB GALETTES WITH HAZELNUT FRANGIPANE

Rhubarb Galettes With Hazelnut Frangipane image

Assemble these one at a time so the rhubarb juice doesn't have time to run wild while you're finishing them.

Provided by Briana Holt

Yield Makes 8

Number Of Ingredients 17

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Ingredients

2 3/4 cups all-purpose flour
2 tablespoons granulated sugar
1 3/4 teaspoons kosher salt
1 1/4 cups (2 1/2 sticks) chilled unsalted butter, cut into pieces
3/4 cup raw skin-on hazelnuts
1/3 cup plus 1/4 cup granulated sugar
4 tablespoons (1/2 stick) unsalted butter, room temperature
2 tablespoons buckwheat flour
1/2 teaspoon rye whiskey or vanilla extract
1/4 teaspoon kosher salt
2 large eggs
1 1/2 pound rhubarb, halved lengthwise, cut into 2 1/2" pieces
1 tablespoon finely grated orange zest
3 tablespoons fresh orange juice
All-purpose flour (for surface)
1/2 cup demerara sugar
1 tablespoon aniseed

Steps:

Pulse flour, granulated sugar, and salt in a food processor to combine. Add butter and process until mixture resembles coarse meal with a few pea-size pieces of butter remaining.
Transfer mixture to a large bowl; drizzle 1/3 cup ice water over. Gently mix with your hands until a shaggy dough forms.
Turn out dough onto a lightly floured surface and knead once or twice, pressing to incorporate any dry bits of flour. Divide dough into 2 pieces and flatten each into about a 1"-thick disk. Wrap in plastic wrap; chill at least 1 hour.
Dough can be made 2 days ahead. Keep chilled, or freeze 1 month.
Preheat oven to 350°F. Process hazelnuts and 1/3 cup granulated sugar in a food processor to a fine paste, about 3 minutes. Add butter, buckwheat flour, rye, salt, and 1 egg and pulse until smooth; set frangipane aside.
Toss rhubarb, orange zest and juice, and remaining 1/4 cup granulated sugar in a medium bowl. Let sit, tossing occasionally, 10 minutes.
Whisk remaining egg in a bowl with 1 teaspoon water. Divide each disk of dough into 4 pieces. Roll out a piece of dough on a lightly floured surface to make a 5" round. Spread with about 1 1/2 tablespoons reserved frangipane, leaving a 1" border. Brush border with egg wash. Top frangipane with some rhubarb; fold edges of dough up and over rhubarb, overlapping slightly. Brush dough with egg wash. Repeat process to make 7 more galettes. Transfer to parchment-lined baking sheets.
Sprinkle galettes with demerara sugar and aniseed and bake, rotating once, until crust is golden brown and rhubarb is soft, 30-40 minutes. Let cool on a wire rack. Do ahead: Galettes can be baked 3 days ahead; store tightly wrapped at room temperature.