Rhubarb Pie with Pistachio Crumb

Rhubarb Pie with Pistachio Crumb

Single crust pie dough
3 cups flour
1 cup shortening
pinch of salt
1 egg
1 Tablespoon vinegar
1/3 cup water

Filling
1 3/4 pounds (about 6 cups) rhubarb, ends trimmed, cut crosswise into 3/4-inch pieces
1 cup sugar
2 tablespoons cornstarch
½ teaspoon nutmeg
2 Tablespoons lime juice
Pinch of salt

For topping
1/3 cup shelled natural pistachios
3/4 cup unbleached all-purpose flour
1/2 cup granulated sugar
1/4 cup packed brown sugar
6 tablespoons cold unsalted butter

Directions
1. Place the pie dough on a floured piece of parchment paper. Using your knuckles, press edges of dough to help prevent cracking. Roll out dough to a 14-inch round.
2. Use the parchment to lift and wrap dough around rolling pin; carefully unroll over a 9-inch pie plate. Gently fit dough into bottom and sides of plate, being careful not to stretch or tear. Using kitchen shears, trim dough to a 1-inch overhang; fold under, and press gently to seal. Crimp edges if desired. Refrigerate 1 hour.
3. Preheat oven to 400 degrees. with rack in lowest level. In a large bowl, toss rhubarb with sugar, cornstarch, and salt. Pour into pie shell; sprinkle with Crumble Topping. Place pie on a foil-lined rimmed baking sheet.
4. Place pie in oven; reduce heat to 375 degrees. Bake until topping is browned and crust is lightly browned, about 1 1/2 hours. (If topping or crust begins to brown too quickly, tent with foil.) Cool completely before serving.