Prepare the Mushrooms: Wipe the mushrooms clean with a damp cloth and slice them into thick strips.
Sauté the Mushrooms: Heat olive oil in a large skillet over medium heat. Add the mushrooms and sauté for 5–7 minutes, stirring occasionally, until they release their juices and start to brown.
Add Aromatics: Lower the heat slightly, add butter, and stir in the minced garlic. Cook for 1–2 minutes until fragrant but not browned.
Create the Sauce: Pour in the white wine and sprinkle in the thyme, salt, and pepper. Let it simmer for 3–4 minutes, allowing the sauce to reduce and thicken slightly.
Finish with Lemon: Squeeze fresh lemon juice over the mushrooms and stir to combine. Taste and adjust seasoning if needed.
Garnish and Serve: Transfer the mushrooms to a serving dish, garnish with parsley, and serve immediately. Enjoy as a side to steak, chicken, or pasta, or on its own!