Cook your sushi rice according to package instructions. Mix in rice vinegar and sesame oil once it finishes cooking.
Line a 13x9 inch baking sheet with oiled foil or parchment paper and spread rice out in an even layer. The layer should be around 1/2 inch in thickness.
Refrigerate for at least 45 minutes before frying or overnight.
Once the rice has been refrigerated, carefully cut it into small, two-bite squares or rectangles.
Heat a generous amount of neutral oil in a non-stick pan over medium high heat. Once it gets hot, add the rice squares to the pan and make sure they are not touching.
Fry for about 4 minutes on each side or until the rice becomes golden brown. If the rice begins to burn, add more oil to the pan and lower the heat.
Once all of the rice squares are finished frying, line them on a paper-towel lined plate and set aside to cool before plating.
While the rice is frying, cut the sashimi into small cubes and place into a bowl.
Add sriracha, mayonnaise, gluten free soy sauce, and green onions to the sashimi and mix well.
Top the cooled crispy rice with the sashimi mix and garnish with jalapeño, green onions, and sesame seeds. Enjoy as an appetizer or a meal!