Preheat the oven to 450 degrees Fahrenheit.
Line a baking sheet with parchment paper
Rinse the mushrooms
Pat them dry.
Slice the mushrooms in half.
In a large bowl, toss them with the olive oil, garlic powder, and kosher salt.
Spread the mushrooms in a single layer on the baking sheet.
Bake 10 to 12 minutes until the mushrooms are tender. Serve topped with fresh herbs.
