I wish I had read the reviews before making this!
It was very nice, but made much more than expected. I only used 500g mince and two zucchinis instead of four (although the weight wasn't stated), and couldn't quite get it all in my baking dish. (As CP said, the dish in the photo looks quite small.)
Next time I will use a lasagne dish. I will also add chilli or herbs to increase the flavour, and mix in grated Parmesan with the mozzarella. DD and I liked the eggplant but DH wasn't keen - I might try it with thinly sliced pumpkin.
I cooked it all in the TM as per the recipe, and didn't mind the texture, but the mince could easily be cooked on the stove instead.