Broccoli With Horseradish Sauce

From southern living, a nice sauce to jazz up some broccoli. Time includes chilling time.

Combine all ingredients except broccoli.

Stir well.

Chill 3 to 4 hours.

Separate broccoli into spears.

Cook , covered , in a small amount of boiling water 8 to 10 minutes or until crisp-tender.

Arrange in a dish.

Top with sauce.

mayonnaise, butter, prepared horseradish, onion, salt, dry mustard, crushed red pepper flakes, broccoli