Preheat frying pan with a splash of oil (more or less a tablespoon) in medium heat.
Once fully heated, pan fry small tofu cubes and season with salt and pepper all around. Pan fry until most sides ar golden brown and crisp. Set aside tofu on a separate bowl/plate once it is cooked all around.
Using the same amount of heat, pan fry small cubed mushrooms until each side are golden brown on each side or until mushrooms start to sweat. Once cooked and shriveled into size, combine with tofu.
Turn off heat. Now, combine chopped green onions and toasted sesame seeds with tofu and mushroom mix. Allow it to cool for about 10-15 minutes.
Pour spicy mayonnaise mixture to the tofu / mushroom dry ingredients. Mix until all ingredients are well combined. Set aside OR store in an airtight container (and refrigerate) if you decide to make this topping in advance.