In a saucepan, boil water and cook instant rice according to package directions. Set aside.
In a separate large saucepan or deep skillet, heat cooking spray or oil over medium high heat. Add frozen salmon burgers on one side of pan, and add onion and frozen cauliflower rice on other side of pan. Cover and cook 5 minutes.
Flip salmon burgers and start to break them up with a wooden spoon. Continue to cook 5 minutes, stirring to integrate salmon and cauliflower rice.
Add cooked instant rice, pickles, mayonnaise, BBQ sauce, and coconut aminos if desired. Mix to integrate and season to taste as needed.