Appetizer Pastry(Tart Shell)  
["1 c. butter, chilled", "3 1/2 c. all-purpose flour", "1/4 tsp. salt", "1 egg, slightly beaten", "1/4 c. vegetable oil", "1/2 c. cold water"]
["Cut chilled butter into 1/2-inch slices.", "In a medium bowl, combine flour and salt.", "Use a pastry blender to cut in butter slices until mixture resembles oatmeal; set aside."]
["butter", "flour", "salt", "egg", "vegetable oil", "cold water"]