Step #1 Remove the stems & "core" from your mushrooms & place top side down on a cookie sheet - if they want to roll, just cut a bit off of the top to make it flat so that they won't roll.
Step #2 Fry the sausage, until it is cooked through.
Step #3 Chop the green onions, using the green part too.
Step #4 Mix the cream cheese, cooked sausage, sliced green onions & the soy sauce.
Step #5 Place this mixture where your mushroom stems once were & bake in a 350 degree oven for about 20-30 mins.