In a bowl, combine the salmon, horseradish, breadcrumbs, soy sauce, green onions and a few grinds of pepper. Shape the mixture into eight 3-inch patties.
Coat a nonstick skillet with cooking spray and heat over medium heat. Add the cakes and cook in batches until golden and heated through, about 5 minutes per side.
Make this a Drop 5 Meal by adding:
8 spears steamed asparagus and 1 ounce pita chips.