1 c. chopped onions
1/4 c. butter or oil
2 c. grated cheese, any kind
1/2 tsp. salt
1/8 tsp. pepper
1/2 tsp. dry mustard
7 slices bread
2 tbsp. butter
2 c. milk

Saute onions in oil or butter. Spread slices of bread with butter. Alternate layers of bread and onions and cheese. Mix rest of ingredients; pour over all. Bake at 350 degrees, uncovered, for 1 hour. Makes 4 servings.