Tortilla Chip Casserole - cooking recipe

Ingredients

1 onion, finely chopped
2 tablespoons butter
2 (6 ounce) cans tomato sauce
1 (4 ounce) can diced mild green chilies
2 teaspoons oregano
1 teaspoon salt
1 (8 ounce) package tortilla chips
1/2 lb monterey jack cheese, cut in 1/2-inch cubes
3 cups cooked chicken, , chunked
1 cup sour cream, at room temperature
1/3 cup cheddar cheese, grated

Preparation

Preheat oven to 325 degrees.
Caot a 1 1/2 to 3 quart casserole with nonstick spray.
Saute onion in butter until transparent; add tomato sauce, chilies, oregano and salt.
Simmer sauce, uncovered for 10 minutes; remove from heat.
Layer in the casserole dish, in order, half the following: tortilla chips, jack cheese, chicken and sauce.
Repeat with the other half of each.
Bake for 20 minutes at 325 degrees.
Remove from oven and spread sour cream over top; wreath with grated cheese.
Broil just until cheese melts.
Serve immediately.