- In a small saucepan heat margarine until melted. Stir in flour, salt, sugar, pepper and onion. Add sour cream; stir until smooth.
- Heat mixture, stirring constantly, until mixture starts to boil. Stir in broccoli. Pour mixture into lightly greased 1 1/2-quart baking dish. Stir together cereal and cheese. Sprinkle cereal and cheese mixture over broccoli.
- Bake in 350° F oven about 20 minutes or until bubbly.