Microwave green beans and 1 Tbsp water on high for 7-8 minutes.  Meanwhile, combine sour cream & chive potato slices, contents of sauce pkg, butter, and boiling water in an ungreased 3 qt casserole dish.  Stir in the milk.  Drain green beans.  Add to the potato mixture.  Mix well.  Bake at 400 degrees for 20 minutes.  Remove from oven.  Stir in pork pieces.  Return to the oven and bake for an additional 20-25 minutes or until lightly browned.  Let stand 5 minutes.  Stir before serving.  You can add mushrooms to this also, if you want.