In a large bowl, combine soy sauce, gochujang, sesame oil, brown sugar, minced garlic, and grated ginger. Mix well to form a marinade.
Add the sliced flank steak to the marinade, ensuring all pieces are well coated. Cover and let marinate in the refrigerator for at least 30 minutes (up to 2 hours for better flavor).
Heat a large skillet or grill pan over medium-high heat. Add the marinated steak and cook for about 3-4 minutes on each side, or until cooked through and nicely browned. Remove from heat and let it rest for a few minutes before slicing into thin strips.
To assemble the rice bowls, start with a base of cooked white rice in each bowl.
Layer the sliced steak on top of the rice, followed by steamed broccoli and shredded carrots.
Garnish the bowls with sliced green onions and a sprinkle of sesame seeds.
Enjoy your Korean BBQ Steak Rice Bowls warm, and adjust toppings as per preference!