Preheat the oven to 400F°
Wipe mushrooms clean and remove and reserve mushroom stems.
Arrange mushrooms hollow side up in baking dish
Chop the stem pieces and set aside
Chop the garlic and parsley and set aside
In a medium sized mixing bowl, combine the Parmesan cheese and breadcrumbs with stems, garlic, salt and pepper
Stir the mixture well and add a little olive oil.
Mound the filling onto the mushrooms; bake for 15 minutes.
Cool slightly then place in a serving dish. Garnish with parsley and drizzle each mushroom with olive oil.