Preheat oven to 350 degrees.

Mix butter, flour, sugar, salt, onion, cheese, and sour cream.

Add drained beans and mix gently.

Pour into 8 x 8 Pyrex casserole, sprayed with cooking spray.

Top with 3/4 – 1 cup Ritz crackers.

Bake at 350 degrees for approximately 25-30 minutes, or until bubbly and the topping is golden, but not burned.

Version 2:
2 tsp. melted butter
2 tsp. flour
1 tsp. salt
1 tsp. sugar
1/4 tsp. pepper
1 small grated onion
1 c. sour cream
2 (28 oz.) cans French style green beans, drained
8 oz. swiss cheese, grated
1 c. corn flakes, crushed

Saute onion in butter. Add flour,salt,sugar and pepper. Mix in sour cream, beans and cheese.

Pour into 9×13 baking dish.

Top with cornflakes.

Bake at 400 degrees for 20 minutes.