Toasty Cheese Bake

8 slices bread
margarine
1/2 lb. ground beef
1/4 cup chopped onion
2 tblsp. chopped celery
1 tblsp. prepared mustard
1/2 tspn. salt 1 cup shredded sharp american cheese
1 egg,slightly beaten
3/4 cup milk
1/2 tspn salt
dash pepper
1/8 tspn. dry mustard

Heat oven to 350*
Toast bread; butter both sides Cook and stir meat, onion, celery, prepared mustard and 1/2 tspn. salt until meat is brown and onion is tender Alternate layers of toast, meat mixture and cheese in greased baking pan, 9×9x2. Mix remaining ingredients;pour over layers in pan. If you wish, sprinkle with paprika
Bake uncovered 30 to 35 minutes 4 to 6 servings