Step 1

Preheat oven to 400 degrees F.  Spray 2 sheet pans with olive oil.

Step 2

Divide mushrooms evenly among the 2 prepared sheet pans.

Step 3

Drizzle each with 1 tablespoon olive oil, ¼ teaspoon kosher salt, pepper and half the fresh thyme then toss to evenly coat.  Spread the mushrooms out in an even layer.

Step 4

Roast mushrooms for 20 minutes, mixing then rotating pans halfway through cooking.

Step 5

Top with Parmesan, a drizzle of balsamic vinegar and garnish with more fresh thyme.