Preheat the oven to 375°F (190°C).
Cook the sushi rice according to package instructions.
Mix the salmon preparation with mayonnaise, sriracha, soy sauce, and sesame oil.
Layer the cooked sushi rice in a baking dish, pressing it down.
Spread the salmon mixture evenly on top of the rice.
Bake for 25-30 minutes or until the top is golden and bubbly.
Remove from the oven and let it cool slightly before serving.
Serve warm, garnished with sliced green onions and additional nori if desired.