The order of the layering the vegetables does not really matter, as long as the potato slices are on the bottom. (So the layer doesn???t fall apart before you can plate it). The vegetables in the dish are based on what I found at the farmer???s market. You can switch out the cauliflower for broccoli and spinach for chard. The chard will require a slightly longer cooking time on the pan. Also, feel free to use whatever herbs you can find. You can use button or crimini mushrooms instead of the portobello. It???s really a free-for-all kind of dish. Instead of having a slice of garlic bread with the lasagna, serve it with a side of quinoa. Quinoa is a super whole grain, containing complex carbohydrates and protein.