1 pound wild salmon fillet, skinned and cut into 4 portions
2 teaspoons blackening or Cajun seasoning
1 small avocado, pitted
2 tablespoons low-fat mayonnaise
4 crusty whole-wheat rolls, split and toasted
1 cup arugula
2 plum tomatoes, thinly sliced
1/2 cup thinly sliced red onion
Oil grill rack; preheat grill to high.
Rub salmon on both sides with blackening (or Cajun) seasoning. Grill until cooked through, 3 to 4 minutes per side.
Mash avocado and mayonnaise in a small bowl.
To assemble sandwiches, spread some of the avocado mixture on each roll and top with salmon, arugula, tomato and onion.