Gather the ingredients for your sushi bake cups.
Preheat the oven to 400°F and lightly grease a muffin pan.
In a large bowl, combine the salmon, mayonnaise, and soy sauce. Set aside.
Cut the nori sheets into squares and press each one into the muffin tin cups.
In another bowl, mix the rice, rice vinegar, and salt.
Fill each nori cup with the rice mixture.
Top the rice cups with the marinated salmon.
Sprinkle the sushi cups with sesame seeds.
Bake in the preheated oven for 15 minutes. Let them cool in the pan for 5 minutes.
Garnish with green onions and serve. Enjoy!