Make the Marinade: In a small bowl, combine soy sauce, honey, rice vinegar, ginger, garlic powder, and red pepper flakes.
Marinate the Salmon: Place salmon in a shallow dish and pour the marinade over it. Marinate for at least 30 minutes, or up to 2 hours.
Prepare the Brussels Sprouts: Toss Brussels sprouts with olive oil, salt, and pepper.
Cook the Salmon and Brussels Sprouts: Grill or broil salmon and Brussels sprouts for 5-7 minutes per side, or until cooked through.
Make the Sauce: In a small bowl, combine mayonnaise, Dijon mustard, honey, lemon juice, and garlic powder. Mix well.
Assemble the Bowls: Serve salmon and Brussels sprouts over rice or quinoa. Drizzle with sauce.
