Separate the stems and caps of the mushrooms. Finely chop the stems and slice the tops.
Heat a little oil with the butter in a large frying pan and cook the mushrooms over a medium heat, stirring constantly, until they are golden brown: about 8 minutes. Add the shallots, garlic and pumpkin seeds and cook for a further 4 minutes. Add the seasoning, lemon juice and wine, simmer for 4 minu