Looking for a new way to serve spinach? Try this recipe!
Preheat oven to 350 degrees.
Sauté onion in butter.
Beat egg yolks until thick and lemon-colored.
Stir into hot white sauce along with spinach and cheese.
Fold in egg whites beaten until stiff, not dry, peaks are formed; turn into greased 1 1/2 qt casserole.
Set in pan of hot water and bake about 50 minutes.
Melt butter, stir in flour and heat until bubbly.
Gradually add milk or cream, stirring constantly; cook 1-2 minutes.
Season with salt and pepper.
Serve immediately.