Stuffed Shells with White Sauce

Cook shells according to directions. Drain, place in cold water. Brown sausage, onion and mushrooms. Drain on paper towel. In a large bowl, combine sausage mixture, chicken, egg yolks, spinach, Mozzarella, and 1/2 cup Parmesan cheese. Mix well.

Fill shells. Pour 1/2 spaghetti sauce into baking dish, place shells tightly side by side.

To make white sauce: In small saucepan, melt 2 tablespoons butter. Stir in 2 tablespoons of flour until smooth. Gradually stir in 1 1/2 cups whipping cream. Cook until it thickens slightly. Stir in 1/3 cup Parmesan cheese, dash of garlic powder and dash of nutmeg. Blend well. spoon white sauce over shells. Spoon remaining spaghetti sauce over white sauce. Bake at 350 degrees for 30 to 40 minutes.