Grandma's Green Bean Casserole

Instructions

1. Gather all ingredients. Preheat the oven to 350 degrees F (175 degrees C).
2. To make the green beans: Melt butter in a large skillet over medium heat. Stir in flour until smooth, and cook for 1 minute. Stir in sour cream, onion, salt, and sugar.
3. Add green beans, and stir to coat. Transfer green bean mixture to a 2 ½-quart casserole dish.
4. Spread Cheddar cheese over green bean mixture. Toss cracker crumbs and melted butter together in a small bowl; sprinkle over bean mixture.
5. Bake in the preheated oven until topping is golden and cheese is bubbly, about 30 minutes.
6. Serve and enjoy.