Pepperoni stuffed mushrooms are a delicious appetizer made with large mushrooms, pepperoni, cream cheese, and breadcrumbs. The mushrooms are stuffed with a mixture of cream cheese and chopped pepperoni, then topped with breadcrumbs for a crispy finish. These bite-sized treats are perfect for parties or as a savory snack. The combination of the earthy mushrooms, spicy pepperoni, and creamy cheese creates a flavorful and satisfying dish.