Cut dried tofu into 0.5cm thick strips.
Slice onion, carrot, scallion, and spicy chili pepper into thin strips.
Heat cooking oil in a pan and stir-fry scallion to release its aroma.
Add onion and carrot and stir-fry.
Add sliced dried tofu and stir-fry quickly over high heat.
Mix in soy sauce, oyster sauce, chili powder, and minced garlic.
Add spicy chili pepper and finish stir-frying.
Drizzle with sesame oil and sprinkle with crushed sesame seeds to finish.