In a mixing bowl, combine soy sauce, olive oil, minced garlic, black pepper, and salt. Add the flank steak and marinate for at least 15 minutes.

In a rice cooker or pot, combine jasmine rice and water. Cook according to rice cooker instructions or bring to a boil, then reduce heat and simmer for 15 minutes until water is absorbed.

In a skillet, heat sesame oil over medium heat. Add bell pepper, broccoli, and carrots. Sauté for about 5-7 minutes until vegetables are tender.

Preheat a grill or skillet over medium-high heat. Remove steak from marinade and cook for about 4-5 minutes per side for medium-rare, or until desired doneness. Let rest before slicing.

In each bowl, place a serving of rice, top with sliced steak, sautéed vegetables, and garnish with green onions and sesame seeds.