Ingredients

1 teaspoon cumin seed 

1 teaspoon fennel seed 

1 teaspoon dried oregano 

1 teaspoon dried thyme 

2 teaspoons paprika 

1/2 teaspoon ground cayenne pepper 

2 teaspoon coarse salt 

1/2 teaspoon freshly ground black pepper 

2 tablespoons prepared horseradish 

1/4 cup plain low-fat yogurt 

1 tablespoon honey 

4 four-ounce salmon fillets, skin removed 

4 slices crusty bread 

1 bunch arugula, stems trimmed 

1/2 small red onion, thinly sliced crosswise 

Preparation

Place cumin seed, fennel seed, oregano, and thyme in a spice grinder. Pulse until finely chopped but not powdery. Transfer to a small bowl; stir in paprika, cayennepepper, 1 1/2teaspoons salt, and 1/4teaspoon black pepper; set aside. In anothersmall bowl, whisk together horseradish, yogurt, honey, remaining1/2teaspoonsalt, and 1/4teaspoon pepper; set aside.

Heat a heavy skillet over medium-high heat. Coat each fillet with 2 teaspoons of spice blend; pat with fingers. Place fillets in hot skillet. Cook until well browned, about 5 minutes. Flip fillets; cook through, about 5 minutes more. Transfer to plate; set aside.

To assemble, spread bread with horseradish mixture.Top with arugula and onion. Flake salmon into chunks; place on sandwiches. Drizzle with remaining horseradish mixture; serve.