Step 1

PreparationFor crust: Blend all purpose flour, sugar and salt in processor. Add chilled butter pieces and cut in using on/off turns until mixture resembles coarse meal. Add 3 tablespoons ice water and process until moist clumps form, adding more ice water by teaspoonfuls if dough is dry. Gather dough into ball; flatten into disk. Wrap in plastic and refrigerate 30 minutes. (Can be prepared 2 days ahead. Keep refrigerated. Let soften slightly at room temperature before rolling out.)

Step 2

Roll out dough on lightly floured surface to 12-inch round. Transfer to 9-inch-diameter glass pie dish. Fold edges under, forming high-standing rim 3/4 inch above dish sides; crimp edges decoratively. Freeze crust 25 minutes.

Step 3

Preheat oven to 350°F. Bake crust until light golden brown, about 30 minutes. Cool while preparing filling. Maintain oven temperature.

Step 4

For filling: Combine pear pieces, 3 tablespoons sugar, 2 tablespoons orange juice and salt in large nonstick skillet. Cook over medium heat until pears are tender but still hold their shape, stirring often, about 6 minutes. Transfer pear mixture to large bowl; cool to room temperature. Add blueberries, flour and remaining 6 tablespoons sugar to pears; toss gently to blend.

Step 5

Transfer filling to cooled pie crust, mounding filling slightly in center. Sprinkle with Walnut-Streusel Topping. Bake pie until juices bubble thickly, fruit is tender and streusel topping is golden brown, about 1 hour 5 minutes. Cool pie on rack until lukewarm. Cut pie into wedges and serve.