To make these sushi cups, start by preparing the rice according to the package instructions. Once the rice is done, set it aside.
Next, preheat your oven to 400 F.
While the oven is preheating, prepare the shrimp by peeling and deveining them (if not done already). Pat the shrimp dry with a paper towel, then chop them into small pieces. Add a pinch of sea salt to the shrimp, then set them aside.
In a separate bowl, add in the kewpie mayo, cream cheese, sriracha, and soy sauce or coconut aminos, and mix until fully combined. If the cream cheese makes it hard to fully mix the ingredients together, you can place the bowl in the microwave for 20 seconds, until the cream cheese softens.
Once the sauce is done, pour it over the shrimp and mix until the shrimp pieces are fully coated in the sauce.
Next, set the bowl with the shrimp aside and prepare the nori sheets. Cut them into squares, then place one of the cut nori sheets into the cavity of a muffin tin. Repeat until the entire tin is filled with the nori sheets.
Then, using your hands or a spoon, press 1-2 tablespoons of rice into each of the nori sheets, pressing them down.
Once all of the nori sheets have rice added to them, scoop 1-2 tablespoons of the shrimp mixture into each of the nori cups.
Place the muffin tin into the oven and bake the sushi cups for 15 minutes. Then, turn the broiler on and broil the sushi cups for 2 minutes, so that the tops of the shrimp get nice and crispy.
Once the sushi cups are done, remove them from the oven. Top each cup with an extra drizzle of spicy mayo and chopped chives for garnishing. Then, serve and enjoy!