Chicken Enchiladas (white sauce)

This makes a lot but you can cut it in half. We tried this one and Brad liked it even though it has sour cream in it.

3 c. cooked chicken, chopped
1/4 c. diced onion, sautéed
2 lbs. grated cheese

Add onions to chicken; set aside. Grate cheese; set aside. Combine with above ingredients;

1 lg ctn. sour cream (16 oz.)
1 sm. can diced green chiles
2 cans cream of chicken soup

Two to three dozen small flour tortillas. Take grated cheese and 1 tablespoon sauce. Put in tortilla and roll up. Place in 9 x 13-inch cake pan. Spread leftover sauce and grated cheese on top. Cover with tin foil, bake at 350º for 30 minutes.