Prepare Pastry For One Pie Shell. (Can Be A Pizza Crust Rolled Very Thin) If Using A Pie Crust, Roll Edges Under And Flute. Prick Bottom With A Fork To Vent. Bake Shell For 15 Minutes At 425 Deg. F. Reduce Oven To 350 Deg. F. Brown The Ground Beef, Drain Off Grease. Add Vegetables And Cook Till Tender. Stir In The Sauce Simmer 5 Minutes. Spoon Half The Meat Mixture Into Pastry Shell Cover With 3/4 Cup Cheese. Add Remaining Meat Mixture Bake At 350 F. For 15 Minutes. Put Remaining Cheese On Top And Bake Again Until Cheese Is Melted.