Preheat oven to 425°.
Combine first 4 ingredients in a saucepan; bring to a boil. Remove from heat.
Place fish on a foil-lined jelly roll pan coated with cooking spray; sprinkle with salt and pepper. Bake at 425° for 12 minutes. Remove from oven.
Brush sugar mixture evenly over salmon; broil 3 inches from heat 3 minutes or until fish flakes easily when tested with a fork.
Chinese-style hot mustard has a sharp bite similar to that of wasabi. If you don't have it on hand, use Dijon mustard or 1 teaspoon of a dry mustard such as Coleman's.