This is one of those recipes that I just kind of wing every time, so forgive the vagueness. It's hard to mess it up though....
About 2 cups shredded cooked chicken
About 2 cups shredded cheddar cheese
some sour cream
Big can of Rosarita enchilada sauce
Mix the chicken with just enough sauce to cover the chicken. Mix in some sour cream if you want a milder flavor (with kids, I recommend this....) Mix in the cheese. Scoop onto corn tortillas and roll them up. Place in a 9x13 baking dish (cover the bottom of the dish with sauce) and pour sauce all over the top. Sprinkle cheese on the top. Bake in a 350 degree oven until the cheese is bubbly.