Make the teriyaki marinade: In a small bowl, whisk together the soy sauce, honey, brown sugar, rice vinegar, sesame oil, olive oil, ground ginger, garlic powder, salt, and black pepper until combined.
⅓ cup low-sodium soy sauce, 2 tablespoons honey, 2 tablespoons brown sugar, 1 tablespoon rice vinegar, 1 tablespoon sesame oil, 1 tablespoon olive oil, ½ teaspoon ground ginger, ½ teaspoon garlic powder, ¼ teaspoon salt, ¼ teaspoon ground black pepper
Marinate the salmon: Pat the salmon fillets dry with paper towels, then place them in a shallow dish or zip-top bag. Pour the teriyaki marinade over the salmon and turn to coat. Refrigerate for 15-30 minutes, but no more than 1 hour.
4 salmon fillets
Prepare the rice and toppings: While the salmon marinates, cook the rice according to package instructions or reheat leftover rice. Slice the avocado, dice the cucumber, slice the green onions, and set everything aside for assembly.
3 cups cooked white rice, 1 avocado, 1 cup cucumber, 2 tablespoons sliced green onion
Broil the salmon: Set the oven to broil and line a baking sheet with aluminum foil. Remove the salmon from the marinade and place the fillets skin-side down on the prepared baking sheet. Spoon a little marinade over the tops of the fillets, then discard the rest.
Cook until caramelized and flaky: Place the oven rack so the salmon sits about 6 inches from the heat. Broil for 7-10 minutes, or until the salmon is cooked through, flakes easily with a fork, and has caramelized edges.
Make the creamy wasabi mayo: While the salmon broils, whisk together the mayonnaise, rice vinegar, wasabi paste, honey, salt, and black pepper in a small bowl. Taste and adjust with more wasabi if desired. Add 1-2 teaspoons of water to thin it into a drizzle, if needed.
½ cup mayonnaise, 1 tablespoon rice vinegar, 2 teaspoons wasabi paste, 1 teaspoon honey, ¼ teaspoon salt, ¼ teaspoon ground black pepper, 1-2 teaspoons water
Assemble the bowls: Divide the cooked rice between four bowls. Top each bowl with one teriyaki salmon fillet, sliced avocado, diced cucumber, green onion, and sesame seeds.
1 tablespoon sesame seeds
Finish and serve: Drizzle with creamy wasabi mayo and serve right away.