Cheesy Supper Pie

Directions

1. Combine flour and salt; cut in margarine until mixture resembles coarse crumbs. Gradually add combined water and egg yolk; mix well. Shape dough into ball; chill.
2. Combine meat, crumbs, onion, Worcestershire sauce and salt; mix lightly. Shape into meatballs. Brown meatballs; drain. Add remaining ingredients; mix lightly. Spoon into 2 quart rectangular baking dish.
3. On lightly floured surface, roll out dough to 13 by 9 inch rectangle. Place over casserole. Flute edges; prick with fork. Brush with beaten egg white. Bake at 350 degrees F 35 to 40 minutes or until lightly browned.