To use prepared frozen pie crust: Place cookie sheet in oven and preheat oven as directed. Pour filling into frozen crust and bake on preheated cookie sheet. Pie is done when center reaches 200°F. Tap center surface of pie lightly - it should spring back when done. For easy clean up, spray pie pan with cooking spray before placing pie crust in pan. If pie crust is overbrowning, cover edges with foil.