Grandma's Green Bean Casserole

This is an interesting and yummy

way to eat green beans!

2 tblsp butter
 2 tblsp flour
1 tsp salt
1 tsp white sugar
1/4 cup onion, diced
1 cup sour cream
3 cans of green beans (I used 3 cups of fresh beans)
2 cups grated cheese
1/2 cup crumbled buttery round crackers
1 tblsp butter, melted

Preheat oven to 180C. Melt 2 tblsp butter in a large pan over medium heat. Stir in flour until smooth, and cook for one minute. Stir in the salt, sugar, onion and sour cream. Add green beans and stir to coat.
Transfer into a 21/2 quart casserole dish. Spread cheese over the top. In a small bowl, toss together cracker crumbs and remaining butter and sprinkle over the cheese. Bake for approx. 30 minutes.