Preheat Oven: Set your oven to 375°F (190°C) so it’s ready for baking.
Prepare Mushrooms: Gently clean mushrooms with a damp cloth and remove stems. Keep caps aside and finely chop the stems.
Cook Filling: Heat olive oil over skillet, fry chopped stems and garlic until fragrant. Stir in cream cheese, Parmesan, and seasoning. Mix until creamy and smooth.
Stuff Caps: Spoon the filling generously into each mushroom cap, pressing lightly to pack. Sprinkle shredded mozzarella on top for a golden crust.
Bake Mushrooms: Place stuffed caps on a baking sheet and bake 18–20 minutes or until bubbly and slightly brown.
Serve & Rest: Rest them for 5 minutes, garnish with parsley and serve hot.