This recipe for slow cooker chicken enchilada casserole is a one pot meal (yay!). To make this recipe, I cook the chicken with a big can of red enchilada sauce, all day in my slow cooker. Then when I get home, I shred the chicken, stir in some 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 I don’t have the huge mess all over my kitchen from frying tortillas, and rolling the enchiladas.