Preheat oven to 350 degrees.

Clean mushrooms and remove stems.

Dice stems into very small pieces.

Place mushroom stems and all remaining ingredients in medium sized bowl and stir to combine.

Using a small spoon, fill each mushroom cap with stuffing and place on a baking sheet.

Bake at 350 for 10-12 minutes or until cheese is bubbly and mushrooms are cooked through.