1/2 cup flour
1/2 cup hazelnuts
1/4 cup packed, golden brown sugar
1/4 cup sugar
1/4 teaspoon salt
5 tablespoons chilled unsalted butter, cut into 1/2-inch pieces
1 1/2 pounds ripe apricots, halved, pitted, each cut into 4 wedges
1 cup sugar
3 tablespoons flour
1/4 teaspoon ground allspice
1 1/2 pint basket raspberries
For Streusel Topping:
Position rack in lowest third of oven and preheat to 400 degrees.
Combine first 5 ingredients in processor. Blend using on/off turns until nuts are coarsely chopped. Add butter and cut in using on/off turns until mixture begins to clump together. Transfer streusel to bowl and refrigerate.
Combine apricots, sugar, flour and allspice in large bowl; toss to blend. Let stand until dry ingredients are moistened, about 25 minutes. Carefully fold in raspberries.
Roll out pie-crust disk on lightly floured surface to 12 1/2-inch round.
Transfer crust to 9-inch diameter glass pie dish. Trim dough overhang under; crimp edges decoratively.
Spoon filling into crust.
Place pie on baking sheet. Bake until filling begins to bubble at edges, about 45 minutes.
Sprinkle streusel topping evenly over pie. Cover crust edges with foil to prevent overbrowning.
Bake until crust and topping are golden and filling is bubbly in center, about 50 minutes.
Cool pie on rack at least 2 hours.