DIRECTIONS:  Brown the beef in a large skillet or pot, drain off the fat.  Add the tomatoes, 1/2 cup water,  seasoning mix & onion.  Cook uncovered 10 minutes stirring occasionally.  Stir in 1 cup sour cream & olives, mix well.  Using large muffin tins that you have sprayed with pan spray place a layer of the chips placing some on the sides,  cover with a layer of the meat mixture & a layer of the cheese.  Repeat making another layer.  Bake at 350 F 176.67 C) for 20 minutes or until thoroughly heated.  Top with remaining sour cream, chopped tomatoes and green onion.