Start by making chimichurri. Combine all ingredients into a food processor and pulse until smooth, then put into a dressing jar.
Rinse mushrooms well then brush them with part of the chimichurri mixture. Let marinade for 15 minutes.
Heat grill to medium heat, about 350-400 degrees.
Cook on each side for about 5 minutes until caramelized and golden brown.
Once the mushrooms are done, take them off the grill and let cool down. You may need to pat the mushrooms down with a paper towel to remove any excess moisture.
Drizzle with the rest of the chimichurri and enjoy!
