Instructions: (Makes two 10x15-inch crusts.) Combine flour, sugar and salt in large bowl. Cut in butter and shortening until mixture resembles coarse meal.

Blend yolks and 1/3 cup water in another bowl. Using fork, stir into flour mixture until dough comes together. Turn dough out onto lightly floured surface. Using heel of hand, push dough away from you in small pieces to blend butter and flour thoroughly. Halve dough. Shape into rounds. Dust with flour. Wrap in waxed paper. Chill 2 hours or freeze 30 minutes. Roll each round out on lightly floured surface into 14x17" rectangle. Fit into bottom and up sides of ungreased 10x15" baking sheet. Fold excess dough under to form sturdy edge; crimp edge. Using fork, pierce dough all over. Repeat with remaining dough. Refrigerate 15 minutes. Position rack in center of oven and preheat to 400 . Line pastry with parchment or foil. Fill with dried beans or pie weights.

Bake until pastry is set, about 10 minutes. Remove beans and foil. Bake until golden brown, 10 to 15 minutes. Cool to room temperature.

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