Clean mushrooms and remove stems.

Small dice the stems and in skillet, add 2 tablespoon butter.

Over medium heat, cook sausage, mushroom stems and onion until sausage is cooked and browned.

In a glass or cookie sheet with side, spray pan with non stick spray.

In bowl combine the softened cream cheese, goat cheese, salt, pepper and parsley flakes.

Mix to combine well. I add the mozzarella in my filling. But you can also sprinkle on top before baking.

Bake at 350 degrees for 15 to 20 minutes or until mushrooms are tender. Check at 10 minutes.