Preheat your oven to 375°F (190°C). Gather your ingredients and greasing spray.

Clean the mushrooms using a damp cloth and remove the stems, finely chopping them.

In a mixing bowl, combine the chopped mushroom stems, cream cheese, sausage, Parmesan, garlic, parsley, salt, and black pepper until mixed.

Stuff each mushroom cap with the filling, creating a mound on top.

Place the stuffed mushrooms on a greased baking sheet, spaced an inch apart.

Press an olive into the center of each stuffed mushroom cap.

Bake in the preheated oven for 20-25 minutes until filling is bubbly and lightly golden.

Remove from oven, let cool slightly, and transfer to a serving platter.