Next, prepare the filling by slicing the tofu into thin strips, about 1cmm thick.
To air-fry the tofu, grease the air-fryer inner rack. Place the tofu in the greased rack and brush a thin layer of oil at the top.
Air-fry at 350F until golden brown, about 8-10 minutes. Empty into a plate and set it aside.
Then, heat a non-stick skillet over medium heat and add a tablespoon of oil. Sauté onion until translucent, stirring occasionally.
Add the sambal and salt, then stir to combine.
Now, add the water or vegetable stock and tofu strips. Give is quick stir and cover the pan with a lid.
Simmer the mixture until all water has been absorbed. Taste and season with more salt or sugar accordingly. Set aside and let it cool completely, then divide it into 8 portions.