In a small bowl, whisk together balsamic vinegar, soy sauce, minced garlic, olive oil, thyme, salt, and pepper.
Toss the mushrooms:
Place the mushrooms in a large mixing bowl. Pour the marinade over them and toss until the mushrooms are evenly coated.
Roast the mushrooms:
Spread the mushrooms in a single layer on a baking sheet lined with parchment paper.
Roast in the preheated oven for 20-25 minutes, stirring halfway through, until the mushrooms are tender and caramelized.
Serve:
Garnish with fresh parsley if desired and serve hot as a side dish or appetizer.
Notes
These Balsamic Soy Roasted Garlic Mushrooms are a savory, umami-packed side dish with a delicious mix of balsamic and garlic flavors, perfect for any meal!