Wash and dry the mushrooms, then slice and fry in butter. Season with salt and freshly ground pepper. Take out to cool down.
Roast the peach over a grill pan that was previously coated with butter. Leave for 2 mins, then turn, then leave 2-3 minutes more. Take out to cool down.
Chop the avocado half and dress in lemon juice, salt to taste.
Toast the bread after preferences (light/ brown/ not at all :) )
Spread the cream cheese over half of the bread slices, then top and garnish as pictured above in this article's image.