PASTRY:

2 c. unsifted all-purpose flour
1 tsp. salt
2/3 c. firmly packed cold butter-flavor vegetable shortening OR
1/3 c. each cold butter and vegetable shortening
1/4 c. cold water
1 egg yolk
1 tbsp. cider vinegar

APPLE FILLING:

3/4 c. sugar
3/4 tsp. cinnamon
2 tbsp. butter
5 lg. Golden Delicious apples (about 2 1/2 lbs.), pared, cored, quartered and thinly sliced (8 1/2-9 c.)

Preheat oven to 450 degrees. Prepare Pastry: Combine flour and salt. Cut in shortening. Whisk together water, egg yolk and vinegar in a small bowl. Gradually pour over flour mixture, stirring quickly with fork until pastry holds together.

Divide pastry in half; flatten into 1-inch thick rounds. Cover with damp toweling. Roll half of pastry out on well-floured surface into 13-inch round. roll onto rolling pin; ease into a 9-inch pie plate.

Prepare Filling: Combine sugar and cinnamon in large bowl. Add apples; toss together. Pile into shell, mounding apple in the center; dot with butter. Roll second half of pastry into a 12-inch round. Ease over apples. Trim, crimp, seal edges. Cut vents for steam to escape.

Slide onto baking sheet. Bake at 450 degrees for 15 minutes. Reduce heat to 400 degrees and continue baking for 1 hour 25 minutes until golden brown and bubbly. Cool for 1 hour.