In a skillet over high heat, heat the olive oil. Then spread the mushrooms in a single layer. Don't stir them! Let them sizzle until they have caramelized on the bottom, about 3-4 minutes.
When the bottoms are caramelized, toss them once and season with salt and pepper, to taste. Continue to cook without stirring for about 5 minutes.
Add the butter and cook until it begins to brown, then add the garlic. Continue to cook until the garlic begins to brown.
Add the thyme and cook for about 10 seconds. Add the lemon juice and cook until the liquid evaporates.
Add the wine, and simmer until the mushrooms are glazed with the sauce.