Although this dish seems ridiculously simple, the flavors meld to yield a sophisticated tasting dish which dish is quite popular here, even with the kids, who normally don’t care for hot spinach dishes. The flavor of the mushrooms helps mitigate the sometimes strong earthiness of spinach. This dish is easy to riff on, making it flexible and fun to make. Add tofu and leftover grains for a one-dish meal. Some spinach has stems that are unpalatable-chewy or stringy-but some have tender, succulent stems. If this spinach falls into the latter class, by all means use the stems. You will have to chew on a couple stems to know if they will work. If they do not, just ignore the recipe instructions pertaining to them.