8 slices bread
1/4 c. soft butter
2 1/2 c. diced sharp process American cheese
4 eggs, slightly beaten
2 1/2 c. milk
1 tsp. salt
1/4 tsp. dry mustard

Trim crusts from bread, if desired. Butter bread, quarter each slice. Alternate layers of bread and cheese in 11 1/2 x 7 1/2 x 1 1/2 inch baking dish - end with cheese on top.

Mix remaining ingredients; pour over layers. Cover; chill 6 hours or overnight. Bake at 325 degrees for 45 minutes or until firm. Let stand a few minutes, cut in squares. Serves 6.