Baked Spinach Casserole

3 tablespoon butter
2 cups light cream (1/2 & 1/2)
3 tablespoon grated onion
2 packages frozen spinach, thawed and drained
1 lb. chopped mushrooms
3 tablespoon grated Gruyere or Swiss cheese
3 tablespoon flour
2 teaspoon salt
1/4 teaspoon nutmeg
1/4 teaspoon white pepper

Heat oven to 325º F.

For the mushroom sauce, saute the onions and mushrooms in butter for 5 minutes. Blend in the flour, salt, pepper and nutmeg. Gradually add the cream, stirring to boiling point. Turn off heat and taste for seasoning.

In a buttered casserole, spread half of the spinach; cover with half of the mushroom sauce, then repeat. Sprinkle with the grated cheese. Set in pan of hot water. Bake for 40 minutes.

Yields: 6 servings