Cheddar Fondue

I haven't made this yet, I have made a similar dip that was all crockpot. This sounds fantastic & I can't wait to give it a try!

Cheddar Fondue
1/4 cup butter or margarine
1/4 cup all-purpose flour
1/2 teaspoon salt -- optional
1/4 teaspoon pepper
1/4 teaspoon mustard powder
1/4 teaspoon Worcestershire sauce
1 1/2 cups skim milk
2 cups shredded cheddar cheese
bread cubes, ham cubes, bite-size sausage, broccoli, mushrooms

In a saucepan, melt butter; stir in flour, salt if desired, pepper, mustard andWorcestershire sauce until smooth. Gradually add milk. Bring to a boil; cook and stir for 2 minutes or until thickened. Reduce heat. Add the cheese; cook andstir until melted. Transfer to a fondue pot or slow cooker; keep warm. Serve with bread, ham, sausage and/or broccoli.