In a mixing bowl, combine the salmon cubes with the salmon marinade ingredients. Mix well to coat the salmon evenly. Cover the bowl and refrigerate for 1 hour.
While the salmon is marinating, prepare the rice according to the package instructions. Once cooked, mix in 1 teaspoon of rice wine vinegar to season the rice. Set it aside.
Preheat your oven to 350 degrees.
Take a 12-count muffin tin and for each muffin hole, lay one square of nori over it. Add approximately 2 tablespoons of cooked rice to the center of each nori square and press it down gently to form a bowl. The nori will crinkle a little. Do not panic! Top rice with 2 tablespoons of the marinated salmon mixture.
Place the muffin tin in the preheated oven and bake for 13-14 minutes until the salmon is cooked through (130 degrees internally)
After cooking time, switch on the broiler for 2-3 minutes or until the tops turn golden brown.
Allow the salmon bites to cool for about 5 minutes, then carefully remove them from the muffin tin and arrange them on a serving plate.
Drizzle the spicy mayo over the salmon bites. You can also sprinkle with rice seasoning if desired and garnish with sliced green onions.