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.
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.
MIX sugar, cinnamon, salt, ginger and cloves in small bowl. Beat eggs in large bowl. Stir in pumpkin and sugar-spice mixture. Gradually stir in evaporated milk.
POUR into pie shell.
BAKE in preheated 425º F oven for 15 minutes. Reduce temperature to 350° F; bake for 40 to 50 minutes or until knife inserted near center comes out clean. Cool on wire rack for 2 hours. Serve immediately or refrigerate. Top with whipped cream or topping before serving.
• Substitute whole-wheat pastry flour for a finer textured, flakier pie crust.
• Oats can be finely ground in a food processor or blender.
• 1 3/4 teaspoons pumpkin pie spice may be substituted for the cinnamon, ginger and cloves; however, the taste will be slightly different.
• Do not freeze, as this will cause crust to separate from the filling.