This dish so easy, I'm almost embarassed to write this. I mean, everyone needs to eat their vegetables, even lazy people, right?
I got these oyster mushrooms at the Chinese market for $2! Use whatever mushrooms you prefer-- I love the array of colors, shapes and sizes you can find at the farmer's market, although they are a bit more expensive.
Wash spinach and mushrooms and let it dry. Grease up your pan a little with some oil. Toss in mushrooms, sautee for about a minute or two, then add the spinach. Reason for doing this is that spinach cooks WAY FAST so just tossing it in right when the mushrooms are almost ready is perfect timing.
When the spinach hits the pan, add your seasonings. I used a slab of butter, a dash of dashi, a dash of soy sauce. Play around with this to your taste. I like this bottled white dashi (above) that you can get at the Japanese grocery store.
Add fleur de sel, grind some pepper, add whatever your heart desires. That's it!
Lazyass cooking is not a crime.