Preheat your oven to 375°F (190°C).
Clean the mushrooms gently with a damp cloth and remove the stems.
Finely chop the mushroom stems and set aside.
In a skillet, heat olive oil over medium heat and sauté minced garlic until fragrant.
Add the chopped mushroom stems and cook until softened.
In a bowl, combine the sautéed mixture with breadcrumbs, Parmesan cheese, cream cheese, and parsley.
Season the mixture with salt and pepper to taste.
Stuff each mushroom cap with the filling, pressing gently to pack it in.
Arrange the stuffed mushrooms on a baking sheet.
Bake for 25 minutes or until golden brown and heated through.