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Apple, Rhubarb, and Ginger Pie Gluten-Free Recipe

MAKES 1 (9-INCH) PIE
Author Olivia Mack McCool

Ingredients

For the crumble topping:

  • 1/4 cup brown rice flour, plus more for dusting
  • 1/4 cup gluten-free rolled oats
  • 1/4 cup pistachios, chopped
  • 1/4 teaspoon cinnamon
  • 3 tablespoons firmly packed brown sugar
  • Kosher salt
  • 5 tablespoons unsalted butter, cubed and chilled

For the crust:

  • 1 recipe Gluten-Free Piecrust Dough, or 1 store-bought gluten-free piecrust

For the filling:

  • 10 ounces rhubarb, sliced into 1/2-inch-thick slices (about 3 cups)
  • 3 Granny Smith apples, peeled, cored and cut into ½-inch chunks
  • 1/2 cup granulated sugar
  • 1/3 cup cornstarch
  • 1-1/2 teaspoons peeled and grated ginger
  • Juice of 1/2 lemon
  • 1 egg, beaten

Instructions

  1. Preheat the oven to 400ºF. In a bowl, mix together the brown rice flour, rolled oats, pistachios, cinnamon, brown sugar, and a pinch of salt. Work the cubed butter into the dry ingredients with your fingers until you have a coarse mixture with large clumps. Refrigerate the crumble topping.
  2. Dust a work surface with brown rice flour. Roll out the pie dough into a 12-inch circle 1/8 inch thick. Roll the dough onto the rolling pin and transfer to a 9-inch pie plate. Trim the dough edge to a 1-inch overhang, then tuck the ends under themselves to create a tall edge around the pie. Using your fingers, crimp a decorative edge all the way around. Refrigerate while you make the filling.
  3. In a large bowl, combine the rhubarb, apples, granulated sugar, cornstarch, grated ginger, lemon juice, and a pinch of salt. Mix well to combine. Tip the filling into the chilled crust and top with the crumble topping.
  4. Line a rimmed baking sheet with parchment paper. Brush the edge of the piecrust with the beaten egg. Place the pie on the prepared baking sheet and bake for 25 minutes. Lower the heat to 375ºF and bake until the crust is golden brown and the crumb topping is browned and crisp, 20 minutes longer. Let cool at least 1 hour before serving.