Lightly coat a fry pan or griddle with non-stick spray and warm over medium heat. Lay 4 tortillas on your work surface. Sprinkle cheese generously over tortillas, top with all other ingredients to your taste and then add a little more cheese. Place the other tortillas on top. Transfer to the heated pan and cook one at a time for just a minute or 2 till heated through and cheese melts. Alternatively, they can be heated on cookie sheets in a preheated oven at 350 degrees F. Serve with salsa verde or guacamole and sour cream on the side.