Green Bean Dairy Supreme

1/4 c. butter
2 T. flour
1 t. salt
1/4 t. pepper
1/2 c. milk
1/2 c. sour cream
1 T. chopped onion
2 cans French style green beans or frozen, cooked according to directions***
2 c. cheddar cheese
1/2 c. corn flake crumbs
2 T. butter

Melt 1/4 c. butter in pan. Add flour, salt and pepper. Add milk. Bring to a boil and cook gently for one minute. Remove from heat. Add in sour cream and onion. Mix well. Gently fold in beans. Place in a shallow casserole. Sprinkle with grated cheese. Mix the 2 T. butter with the corn flake crumbs. Sprinkle over top of the bean mixture. Bake at 30 minutes @ 350*.