In a large bowl, combine flour, sugar and salt; cut in shortening until mixture resembles coarse crumbs. In a small bowl, combine the water, egg and vinegar. Add to shortening mixture, 1 tablespoon at a time, tossing lightly with a fork until mixture forms a ball. Cover and chill for 30 minutes. Meanwhile, combine the first six filling ingredients. Divide pastry into 15 equal portions. On a lightly floured surface, roll out one portion into a 6-1/2-in. circle. Mound a heaping 1/3 cup filling on half of circle. Moisten edges with water; fold dough over filling and press edges with a fork to seal. Transfer to a greased baking sheet. Repeat with remaining pastry and filling. Cut three slits in the top of each turnover; brush with cream. Bake at 375° for 35-40 minutes or until vegetables are tender and crust is golden brown.