Creating these amazing Ghostly Stuffed Mushrooms involves straightforward steps that anyone can follow:

1. Preheat the Oven: Preheat your oven to 375°F (190°C) to prepare for baking.
2. Prepare the Mushrooms: Clean the mushrooms under running water. Remove the stems and set the caps aside.
3. Make the Filling: In a mixing bowl, combine the softened cream cheese, shredded mozzarella, Parmesan cheese, breadcrumbs, minced garlic, chopped parsley, Worcestershire sauce, salt, and pepper. Mix until fully incorporated.
4. Stuff the Caps: Fill each mushroom cap with the cheese mixture, heaping it on top to resemble a ghostly figure.
5. Arrange on Baking Sheet: Place the stuffed mushrooms on a baking sheet lined with parchment paper. Drizzle with a little olive oil for additional flavor.
6. Bake: Bake in the preheated oven for about 20 minutes or until the mushrooms are tender and the tops are golden brown.
7. Add Eyes: Once cooked, take out the mushrooms and let them cool slightly. Place a small slice of black olive or a peppercorn on each stuffed mushroom to create ghostly eyes.
8. Serve Warm: Serve the Ghostly Stuffed Mushrooms warm for the best taste.

These steps lead to an unforgettable dish that is both spooky and delicious!