Created by KittenCal on November 13, 2011
Step 1: Cook macaroni according to package directions.
Step 2: Meanwhile in a small bowl combine the egg, cream and butter; set aside.
Step 3: Drain macaroni; add in the Parmesan cheese, 1/2 cup mozzarella cheese, garlic, salt, pepper and reserved egg mixture; toss to coat, then stir in the tuna and spinach.
Step 4: Transfer to a greased 1-quart baking dish; sprinkle with remaining 1/2 cup mozzarella cheese.
Step 5: Bake uncovered in a preheated 350 degree F oven for 20-25 minutes or until cheese is melted.