If thawed, bake at 180°C for 3 minutes; if frozen, preheat and bake for 5 minutes.
Slice the beef thinly and marinate it in the seasoning sauce.
Prepare the vegetables such as onion, bell pepper, and mushroom.
Stir-fry the marinated bulgogi in a pan until cooked.
Spread tomato sauce over the pizza dough.
Top the dough with the cooked bulgogi and prepared vegetables.
Generously sprinkle mozzarella cheese on top.
Bake in a preheated oven at 180°C for 15 minutes.