Green Bean Casserole - cooking recipe

Ingredients

2 cans green beans
4 Tbsp. melted butter
1 tsp. salt (optional)
1 c. sour cream
1/2 lb. grated Swiss cheese
2 Tbsp. flour
1/2 tsp. grated onion
2 c. corn flakes

Preparation

Mix butter and flour into sour cream.
Add seasoning.
Put 1 can beans in dish.
Put 1/2 cheese on top, then other can and rest of cheese.
Add cream mixture and then crumbled corn flakes.
Bake at 400\u00b0 for 25 minutes.