Pumpkin Pie with Toffee-Walnut Topping Recipe

Directions:

1. For crust: Blend flour, sugar and salt in processor. Add butter and shortening and cut in using on/off turns until mixture resembles coarse meal. Add 2 tablespoons ice water; process using on/off turns until small moist clumps form, adding more water by teaspoonfuls if dry. Gather dough into ball. Flatten into disk. Wrap in plastic; chill 30 minutes.
2. Position rack in bottom third of oven and preheat to 375°F. Roll out dough on floured surface to 12-inch round. Transfer dough to 9-inch-diameter pie dish. Fold overhang under, forming high-standing rim. Crimp edges decoratively. Freeze 15 minutes. Brush crust all over with yolk. Bake until crust is set but still pale, about 15 minutes. Cool slightly.
3. For filling: Whisk first 12 ingredients in large bowl. Pour into crust. Bake until filling is set, about 55 minutes. Transfer to rack. Sprinkle nuts and toffee around edge of hot pie, forming border. Cool pie completely. (Can be made 6 hours ahead. Let stand at room temperature.)