Green Bean Casserole - cooking recipe

Ingredients

small onion, diced
4 Tbsp. margarine
2 Tbsp. flour
1 c. milk
3/4 c. Cheddar cheese, grated
small carton sour cream
2 cans French-style green beans
Parmesan cheese
1 1/2 c. crushed cornflakes

Preparation

Saute onions in 2 tablespoons margarine.
Add flour and milk. Add cheese to hot mixture.
Let cool slightly and add sour cream and green beans.
Pour into casserole and sprinkle with Parmesan cheese.
Mix cornflakes in
2 tablespoons margarine, melted and sprinkle over top.
Bake at 325\u00b0 until bubbly and browned.