1. Zucchini is extremely watery, you must remove excess water. This is part of what makes this recipe time consuming but so worth it. I tried both methods baking the zucchini for 15-20 minutes & salting it for 10 minutes. I thought the baking was worth it as far as how much drier it made the zucchini.
2. I opted to use whole milk ricotta and a little less mozzarella for more flavor. (Trust me I bought the fat free ricotta and the whole milk ricotta. Fat-free taste like cardboard paste, treat yo self and get the good stuff.
3. Look for no sugar added and no oil marinara like TJ's traditional marinara.