INGREDIENTS
•
4 tablespoons butter, divided
•
2 tablespoons flour
•
1 tablespoon sugar
•
1/4 teaspoon pepper
•
1/2 teaspoon salt
•
1 tablespoon onion, chopped
•
1 cup sour cream
•
2 1-pound cans whole green beans, drained
•
1/2 pound Swiss cheese, shredded
•
1 cup crushed corn flakes