Wipe mushrooms clean with a damp paper towel. Trim stems if needed.
In a large skillet over medium heat, melt the butter.
Add garlic and cook for 30 seconds until fragrant.
Add mushrooms and cook for 7-9 minutes, stirring occasionally, until browned and tender.
Stir in Worcestershire sauce, soy sauce, and black pepper. Mix to coat.
Simmer for 2-3 more minutes until sauce thickens slightly.
Sprinkle with fresh parsley and serve hot.
