Heat oven to 375°F.
Combine flour and 1/4 teaspoon salt in bowl; cut in butter with pastry blender or fork until mixture resembles coarse crumbs. Stir in enough water with fork; just until flour is moistened. Shape dough into a ball; flatten slightly.
Roll out dough on lightly floured surface into 12-inch circle. Fold into quarters. Carefully place pastry into ungreased 9-inch glass pie pan. Carefully unfold pastry, pressing firmly against bottom and sides of pie pan. Trim crust to 1/2 inch from edge of pan. Crimp or flute edge.
Sprinkle bacon onto crust; top with onion and cheese. Combine all remaining filling ingredients in bowl; beat with whisk until well mixed. Pour over cheese in pan.
Bake 40-45 minutes or until center is set. Let stand 10 minutes before cutting.
– To save preparation time, use a refrigerated prepared pie crust.
– If edges are browning too quickly, cover with strips of aluminum foil.
– Roll out crust pastry on floured surface. Use rolling pin to roll out dough, slide metal spatula under dough to loosen, adding more flour under dough if sticking.