Save time by making this very tasty chicken enchilada casserole.
4 cups diced cooked chicken, divided
1 can cream of chicken soup
8 ounces (1 cup) sour cream
2/3 cup milk
1 (4 ounce) can diced green chiles
1/4 cup diced onion
1 garlic clove, minced
Pepper to taste
12 corn tortillas
1 1/2 cups shredded pepper jack cheese
1 1/2 cups shredded sharp Cheddar cheese