Broccoli and Sour Cream

3 Tbsp. melted butter
1 tsp. salt
1/2 tsp. grated onion
2 Tbsp. flour
1 tsp. sugar
1 c. sour cream
2 pkg. chopped broccoli
1/2 lb. grated cheese

First six ingredients are the white sauce. Cook frozen broccoli and drain. Make a white sauce of the first six ingredients. Mix broccoli and white sauce together. Pour into baking dish and top with cheese. Bake covered for 30 minutes at 350.