Sausage and Spinach Lasagna

1 quart spaghetti sauce

1 1/2 pounds ricotta cheese, part skim milk

1 1/2 pounds mozzarella cheese, part skim milk

3/4 pound italian sausage

1 1/2 cups parmesan cheese

1 each egg -- beaten

6 ounces spinach -- cooked

1 teaspoon sugar

1/4 teaspoon nutmeg

Cook sausage in skillet and drain, set aside. Mix ricotta, spinach, egg and spices until smooth Pour 1 cup sauce into bottom of baking dish Cover with a layer of cooked lasagna noodles. Add a layer of ricotta, mozz and sausage. Top with a layer of sauce and grated cheese.

Bake in a moderate oven for 35 min.