Lightly coat a 9-inch pie pan with nonstick cooking spray.
Combine crumbs in a small bowl or food processor (pulse to make crumbs from crackers).
Add Splenda, margarine, and oil, and stir or pulse.
Add egg white and stir well, or pulse again. Pour crumb mixture into pie plate. With your fingers, the back of a spoon, or with a sheet of plastic wrap, press down on the crumbs until they coat the bottom and sides of the pie plate.