Cut the beef tenderloin, fried tofu skins, and tofu into bite-sized pieces.
Lightly remove excess moisture from the tofu and fried tofu skins.
Heat cooking oil in a pan and quickly sear the beef tenderloin over high heat.
Add the tofu and fried tofu skins and stir-fry together over medium heat.
Season with salt and pepper to taste.
Transfer the finished dish to a plate and serve.