Ingredients:

3 Tablespoons butter

4 Tablespoons flour

1 ½ cups milk

¼ teaspoon dry mustard

¼ teaspoon celery salt

1 teaspoon chopped parsley

1 teaspoon chopped onion

4 egg yolks

1 cup grated cheddar cheese

2 cups asparagus

4 egg whites, beaten stiff

1 teaspoon paprika

Directions:

Melt butter, add flour, and pour in milk. Cook slowly, stirring constantly until a thick, creamy sauce forms. Add seasonings, yolk, and cheese. Cook over low heat for 2 minutes. Remove and fold in remaining ingredients. Bake at 350℉ for 30 - 35 minutes.