Leucoagaricus rhacodes, sometimes spelled rachodes (it is also known as Agaricus rhacodes, Lepiota rhacodes, Macrolepiota rhacodes, and Chlorophyllum rhacodes), is a stately and delicious mushroom, despite its somewhat confusing taxonomy. Brilliant white with a thick ring on the stalk and shingle-like brown scales on the cap. It has white spores. The flesh bleeds red where it is cut. It is very similar to deadly Amanita species and there is a toxic look alike with green spores. This is not a mushroom for beginners; while it is known by many names, there should be no question as to its identity if you intend to eat it. This recipe will work for any large Agaricus or Lepiota.
Melt a pat of butter in a hot skillet. Add a couple of slices of garlic and place a mushroom cap, gills up, in the melted butter. Splash some wine and heavy cream over the gills. Add another pat of butter, minced garlic, salt and pepper to taste. If you have fat skimmed from beef broth, you can add it to the cream and butter in the cap.
Cook in hot skillet until the cap softens and begins to flatten. When the mushroom is cooked through it is ready to serve. Garnish with diced green onion.