Dice the cheese. Wash the cress, shake dry, pluck the leaves from the stalks and chop coarsely, except for a little to garnish. Clean, clean and slice the mushrooms. Whisk eggs, cream and cress. Season with salt, pepper and nutmeg
Melt butter in a small pan (bottom 19 cm, top 24 cm). Fry the mushrooms for about 3 minutes. Season with salt. Take them out. Put the egg mixture into the pan and let it set slightly
Remove the pan from the heat, spread the cheese and mushrooms on the omelette and heat for about 1 minute in the closed pan. Fold up the omelette, arrange and garnish with cress