Tuna Noodle Casserole

2 cups cooked noodles
1 (6 1/4 ounce) can tuna, drained and flaked
1 cup frozen peas or mixed vegetables
1 (10 1/2 ounce) can cream of celery soup
2 teaspoons parsley flakes
1 tablespoon butter or margarine, melted

In small bowl, toss noodles with just enough vegetable oil to coat. Add remaining ingredients except butter and stir gently. Pour into lightly greased crockette. Pour melted butter over top. Cover and cook for 7 to 9 hours.