In a bowl, combine salmon, soy sauce, 2 tbsp sesame oil, and 2 tbsp rice wine vinegar along with a big pinch of salt. Mix together well until evenly combined, cover, and marinate for 2-4 hours.
Spicy Mayo
To make the spicy mayo, mix together mayo, milk, chile paste/sriracha, sesame oil, in a small bowl. Once its creamy and smooth, set aside or put into a squeeze bottle.
Assemble
Preheat oven to 425°F.
In a medium bowl, toss the cooked rice with 1 tbsp rice wine vinegar and a pinch of sugar.
To a 9x13 baking pan, add the rice on the bottom. Add as much or as little rice as you’d like to the desired thickness. Then add a layer of seaweed on top to cover the rice. Add the salmon on top.
Pop in the oven to bake for about 10 to 15 minutes until golden on top. For more crispiness and color on top, you can broil it for a few minutes but keep a close eye on it so it doesn’t burn.
Once out of the oven, drizzle with the spicy mayo. Add avocado, green onions, and sesame seeds on top and enjoy!