Preheat oven to 400degrees. Unroll pastry sheets into two 9-in. pie plates; flute edges. Line unpricked pastry shells with a double thickness of heavy-duty foil. Fill with pie weights, dried beans or uncooked rice. Bake 10-12 minutes or until light golden brown. Remove foil and weights; bake 3-5 minutes longer or until bottom is golden brown. Cool on wire racks., Divide ham, cheese and onion between shells. In a large bowl, whisk eggs, cream, salt and pepper until blended. Pour into shells. Cover edges loosely with foil. Bake 35-40 minutes or until a knife inserted in the center comes out clean. Let stand 5-10 minutes before cutting. Freeze option: Cover and freeze unbaked quiche. To use, remove from freezer 30 minutes before baking (do not thaw). Preheat oven to 350degrees. Place quiche on a baking sheet; cover edge loosely with foil. Bake as directed, increasing time as necessary for a knife inserted in the center to come out clean.