Cook mushrooms without disturbing for 2-3 minutes then stir and cook for an additional 2-3 minutes until nicely browned. The mushrooms may be hard to determine they are browning due to their already brown color. The pan will begin to show browning from the mushrooms
Add wine and use a spatula or spoon to deglaze the pan. Be certain scrape up all the brown bits from the pan.
¼ cup sherry or white wine
When most of the liquid has evaporated, lower the heat to low, add butter, garlic and thyme sprigs