Preheat the oven to 375 degrees Fahrenheit and grease a 9x13 inch baking dish.

In a large bowl, gently fold the cooked sushi rice with rice vinegar, then press the rice evenly into the bottom of the prepared baking dish.

Sprinkle half of the furikake or sesame seeds evenly over the pressed rice layer.

In a separate bowl, mix the cooked flaked fish, shredded imitation crab, softened cream cheese, spicy mayonnaise, and Sriracha until well combined.

Spread the creamy seafood mixture evenly over the rice layer in the baking dish.

Bake for 15 minutes until the top is bubbly and lightly golden.

Garnish with remaining sesame seeds and sliced green onions before serving warm with roasted seaweed sheets.