Green Bean Casserole

Ingredients:
- 2 pkg. French green beans
- 2 Tbsp. minced onion
- 2 Tbsp. butter
- 1 Tbsp. flour
- 1 c. milk
- 1 tsp. sugar
- 1/2 c. grated cheese
- 1 c. sour cream
- corn flakes

Directions:
- Saute onion in butter.
- Add flour and milk as for white sauce. Add sugar and cheese; let cheese melt.
- Blend in sour cream.
- Mix part of this mixture with drained beans.
- Put in casserole dish; pour remaining sauce on top.
- Cover with crushed corn flakes; dot with butter.
- Bake at 400° for 15 minutes.
- Heat thoroughly.