[header] How to make a mushroom omelette [title] Wash the mushrooms and cut them into thin slices. [step] You can leave the stems on, or discard them. Be sure to scrub the mushrooms with a soft-bristled brush to remove any dirt. 
You don't need to peel them. [title] Heat 1 teaspoon (5 grams) of unsalted butter in a medium-sized frying pan over medium heat.