4 eggs
2 1/2 c. milk
1/2 tsp. prepared mustard
1 tbsp. minced onion
1 1/2 tsp. salt
Dash pepper
8 slices bread (day old)
8 slices processed American cheese

Beat eggs, blend in milk, mustard, onion, salt and pepper. Butter 9 inch baking dish. Place bread, cheese and sauce in alternate layers. Cover with waxed paper - refrigerate for several hours. Bake at 325 degrees for 1 hour or until knife inserted comes out clean. Let stand 5 minutes before serving.