This recipe for slow cooker chicken enchilada casserole is a one pot meal! To make this recipe, you cook the chicken with a big can of red enchilada sauce, all day in your slow cooker. Then, shred the chicken, stir in corn tortillas strips, add some cheese and olives, stir, add a little more cheese and olives on top, cook for one more hour, and wow! Easy enchiladas and you won’t have a huge mess all over your kitchen from frying tortillas, and rolling the enchiladas!! Woohoo!! Delicious and Easy!!