Preheat the oven to 375°F (190°C).
Flake the cooked salmon into small pieces and set aside.
In a bowl, combine the shredded imitation crab, cream cheese, Japanese mayo, and sriracha. Stir until well mixed and creamy.
Add the flaked salmon into the mixture, gently stirring to combine.
Place the cooked sushi rice in the bottom of a baking dish, spreading it evenly.
Top the rice with the salmon and crab mixture, spreading it into an even layer.
Bake for 15-20 minutes, or until the top is golden and bubbly.
Remove from the oven and sprinkle the top with nori strips and furikake (if using).
Serve with soy sauce, pickled ginger, or wasabi for an authentic sushi experience!