California Rice Casserole

1 cup onion, chopped
1/4 cup butter
4 cups cooked rice
2 cups sour cream
1 cup cottage cheese
1 bay leaf
1/2 teaspoon salt
1/8 teaspoon pepper
3 small cans green chiles, drained
2 cups sharp Cheddar cheese, grated
Parsley, chopped

Saut