8 slices white bread
butter
1/2 lb. ground beef
1/4 c. chopped onion
2 tbsp. chopped celery
1 tbsp. mustard
1/2 tsp. salt
1 c. shredded American cheese
1 egg, beaten
3/4 c. milk
1/2 tsp. black pepper

Heat oven to 350 degrees. Toast bread; butter both sides. Cook and stir meat, onion, celery, mustard and salt until meat is brown and tender. Alternate layers of toast, meat mixture and cheese in a greased baking pan. Mix remaining ingredients and pour over layers in pan. Bake in oven at 350 degrees uncovered for 45 minutes.