Another reason for the darkening is their high water content. When frying, water is released from the mushrooms, and if the pan isn't hot enough, they begin to boil instead of fry, leading to ...

Melt a third of the butter in a frying pan over a medium–high heat. Fry the mushrooms with the garlic until they are golden brown and any watery juices have evaporated. Transfer to a plate and ...