9 lasagna noodles, cooked

10 oz frozen chopped spinach, thawed and completely drained

15 oz fat free ricotta cheese (I like Polly-o)

1/2 cup grated Parmesan cheese

1 egg

salt and fresh pepper

32 oz tomato sauce

9 tbsp (about 3 oz) part skim mozzarella cheese, shredded
Directions: 

Preheat oven to 350°. Combine spinach, ricotta, Parmesan, egg, salt and pepper in a medium bowl. Drizzle about 1 cup of sauce on the bottom of a 9 x 12 baking dish.
Place a piece of wax paper on the counter and lay out lasagna noodles. Make sure noodles are dry. Take 1/3 cup of ricotta mixture and spread evenly over noodle. Roll carefully and place seam side down onto the baking dish. Repeat with remaining noodles.
Pour sauce over the noodles in the baking dish and top each one with 1 tbsp mozzarella cheese. Put foil over baking dish and bake for 40 minutes, or until cheese melts. 
Bon Appetit