Preheat oven to 375F. In small mixing bowl combine milk, egg yolk, 2 1/2 teaspoons margarine, and the pepper, mixing thoroughly; add ham and noodles and stir well to thoroughly combine. In separate bowl beat egg white with salt until stiff but not dry; gently fold into noodle mixture.
Grease 2-cup casserole with remaining margarine and spoon noodle mixture into casserole. Bake until browned on top, 45 to 50 minutes.
[Weight Watchers New International Cookbook] Posted by Fred Peters.