Step 1

Combine flour, ground oats, sugar and salt in medium bowl. Cut in butter with pastry blender or two knives until mixture is crumbly. Sprinkle with water; blend together with a fork until mixture holds together.

Step 2

Shape dough into ball; place on lightly floured sheet of wax paper. Top with additional piece of wax paper. Roll out dough to 1/8-inch thickness. Remove top sheet of wax paper and invert dough into 9-inch deep-dish (4-cup volume) pie plate. Slowly peel away wax paper. Trim excess crust. Turn edge under; crimp as desired.