Preheat oven to 400°

Remove stems from the mushrooms and set caps to the side. Dice the stems and set aside

Cook sausage until it is fully browned.

Dice your green onions (white and green)

Mix in your diced stems into the fully cooked sausage and cook for 3 minutes

Mix in garlic and green onions. cook another 3 minutes.

Mix in Panko and fully mix in with the rest of the ingredients. 

Mix in your mascarpone cheese. Make sure it is fully mixed and melted, then remove from heat. 

Mix in your Parmesan 

Generously stuff your mushrooms and bake for 20-25 minutes until mushrooms are cooked and stuffing is golden brown!