In a large mixing bowl, mix together the enchilada sauce and sour cream until well combined.
In another bowl, mix together the chicken, cilantro, 1/2 cup of the enchilada cream sauce, and 1 cup of the shredded cheese. Stir to combine.
Place one tortilla on a hard surface and spoon 2 tablespoons chicken mixture on one side of the tortilla. Roll to enclose filling.
Place tortilla seam side down in a casserole dish that has been coated with cooking spray.
Cover tortillas with remaining enchilada sauce. Sprinkle with remaining cheese. Cover with foil and bake for 30 minutes, or until sauce is bubbly and filling is hot.