Sauté sliced mushrooms in butter, seasoned with salt and fresh cracked peppercorns. Add a little more butter to the pan and pour beaten egg over the mushrooms. Top with very thinly sliced Fruillano cheese, small leaves of oregano and torn basil. Cook over medium heat until the bottom sets and then place in a preheated oven or under a broiler to finish cooking.
Before serving, add a few more whole oregano leaves and torn basil, season with salt and fresh cracked black peppercorn.