Brown 1 lb ground beef or turkey in the skillet. Once browned, add the mushroom mixture back into the skillet. Stir in 6 oz fresh spinach, chopped. Cook until spinach is wilted.
Bring to a slow boil and cook until pasta is tender and liquid is creamy, approximately 10 minutes. Remove from heat and stir in 1/2 cup mozzarella cheese and 1/2 cup parmesan cheese.