Creating Stuffed Mushrooms with Italian Sausage is a straightforward process. Follow these steps to ensure a delicious outcome:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Prepare the Mushrooms: Clean the mushrooms with a damp paper towel. Remove the stems and chop them finely.
3. Cook the Sausage: In a skillet over medium heat, add the Italian sausage. Cook until browned and fully cooked, breaking it apart as it cooks.
4. Add Garlic and Mushroom Stems: Add the minced garlic and chopped mushroom stems to the skillet. Sauté for about 2-3 minutes until fragrant.
5. Mix the Filling: In a large bowl, combine the cooked sausage mixture, cream cheese, Parmesan cheese, mozzarella cheese, parsley, Italian seasoning, salt, and pepper. Mix until well combined.
6. Stuff the Mushrooms: Spoon the filling generously into each mushroom cap, pressing down slightly to pack it in.
7. Arrange on Baking Sheet: Place the stuffed mushrooms on a baking sheet lined with parchment paper. Drizzle a little olive oil over the stuffed mushrooms.
8. Bake: Bake in the preheated oven for 20-25 minutes, or until the mushrooms are tender and the tops are golden brown.
9. Serve Warm: Remove from the oven and allow to cool slightly before serving.

These simple steps will guide you to create a plate of incredible Stuffed Mushrooms with Italian Sausage that will delight your taste buds!