Crockpot King Ranch Chicken

3 - 4 cups cooked, diced chicken
1 pkg. (10 - 12") flour tortillas
1 medium onion, chopped
2 cans (10-3/4 oz.) cream of chicken soup
1 can (1 cup) tomatoes & chilis
4 tbsp. quick-cooking tapioca (not instant)
4 cups grated Cheddar cheese 
4
      In a large bowl, mix chicken, soup, tomatoes, chilis and tapioca.  Rip 2 - 3 tortillas into pieces and line bottom of a 5-qt. crockpot.  Add 1/3 of chicken mixture; top with 1/3 of onion and cheese.  Repeat layers -- tortillas, chicken mixture, onion, cheese 2 more times.  Cover, cook on Low 6 - 8 hours, High 3 hours.  For a small 3-qt. crockpot makes 1/2 recipe.  This is a good take-in dish or potluck dinner for church.