Preheat oven to 350.

Remove gills from mushroom caps gently with a spoon.

In a small bowl, combine remaining ingredients and mix well.

Scoop approximately 1/4 cup of cheese mixture into the mushroom cap, press down gently with back of spoon to get the caps stuffed.

Divide remaining mixture between the 3 caps evenly.

Place on a foil lined baking sheet and bake 20 minutes.