Source : Peel The Mushrooms Set Oven 400fprepare Filling Halve Spinach If Is Frozen Thaw It Squeeze Out Its Juice Saut 1/4 Chopped Onion Then Add Spina...
Place mushroom caps into a baking dish, fill mushrooms with spinach mixture. Sprinkle some Parmesan over them, place mushrooms into oven, cook about 35-40 minutes or until Parmesan changes its color.