Shaker Green Beans

3 cups fresh green beans (no need to cut)
2 tablespoons butter
1 tablespoon flour
1/4-1/2 teaspoon pepper (according to taste)
1 teaspoon salt
1 teaspoon sugar
1/4 cup chopped onions
1 cup sour cream
1 cup shredded cheddar cheese
breadcrumbs

Melt butter.
Add flour.
add all other ingredients except cheese and crumbs.
mix well.
add beans.
Pour into baking dish.
Top with cheddar cheese.
Top with bread crumbs.
Bake uncovered for 30 minutes Or until beans are cooked.