Heat a skillet over medium heat. Add the avocado oil and then the riced cauliflower. Saute for 5 to 7 minutes, then add the coconut aminos and stir to coat. Remove from heat.
Divide the cauliflower rice into bowls. Top each bowl evenly with cucumber, avocado, nori and smoked salmon. Garnish with sesame seeds.
Mix the mayonnaise with cayenne in a small bowl and drizzle on top of the bowls. Enjoy!