To make the sauce, fry onion, garlic and mushrooms til soft. add passata (see notes, for instruction on how to make passata), and red wine, cook for 10 minutes or until wine reduces. place spinach, cheeses, eggs, garlic, nutmeg, salt and pepper in a bowl, mix together. fill canneloni tubes or place on sheets and roll up. put a little sauce on the bottom of a baking dish, place canneloni in a single layer side by side in the dish. pour over the remaining sauce, and a little cream if desired. top with mozzarella and parmesan. bake 200?C for 25-35 minutes.