01 - In a small mixing bowl, whisk together soy sauce, maple syrup, rice vinegar, sesame oil, minced garlic, grated ginger, and chili flakes until evenly blended.
02 - Place the salmon fillets in a shallow dish or resealable bag. Pour half of the marinade over the fillets, reserving the remainder. Marinate for 15 minutes at room temperature.
03 - Preheat the oven to 400°F (200°C). Line a baking sheet with parchment paper to prevent sticking.
04 - Arrange the marinated salmon fillets on the prepared baking sheet. Brush with the reserved marinade. Bake for 12 to 15 minutes, until salmon is fully cooked and flakes easily with a fork.
05 - While the salmon is baking, cook the rice if not already prepared. Slice cabbage, carrots, cucumber, and avocado as directed.
06 - Divide the cooked rice evenly among four serving bowls. Top each with red cabbage, carrots, cucumber, and avocado. Place one salmon fillet in each bowl.
07 - Drizzle any pan juices over the bowls, then sprinkle with toasted sesame seeds and sliced green onions. Serve with lime wedges and additional soy sauce or sriracha if desired.