1 of 779Rating: 3 stars Many other reviewers have noted that - as written - the lasagna needs to be watched carefully for appropriate cook time. Finally, make sure that you are using oven-ready/no-boil lasagna noodles (don't cook them beforehand) instead of the regular kind. It really does depend on your pot, but my lasagna cooked in just under four hours. Thumb Up Helpful (673)Rating: 4 stars If all items are preassembled and put in the 'fridge the night before, it needs to only be in the slow cooker for half the recommended time. This was the first dish I made in my new 6-quart slow cooker (call me lasagna lover).