Preheat oven to 400°F. Grease the baking pan.
Clean the mushrooms and remove the stems. Save stems.
Finely mince about half the mushroom stems, which will go into the stuffing.
In a large bowl, combine the shredded cheese, breadcrumbs, minced herbs, minced garlic cloves, and olive oil. Mix well. Add salt and pepper to taste.
Stuff each mushroom cap with 1-2 tablespoons of stuffing.
Arrange the mushrooms on the baking pan, and bake at 400°F for 17-19 minutes, or until the mushrooms are golden and the stuffing is melted.
