Heat a large skillet over medium-high heat. Add the ground beef and cook for 4–6 minutes, breaking it apart as it cooks, until fully cooked. Drain excess grease if needed.

Add the minced garlic and ginger. Cook for 1 minute, stirring frequently.

In a small bowl, whisk together the sesame oil, brown sugar, and soy sauce. Pour the sauce over the beef and simmer for 3–4 minutes.

In a separate small bowl, mix the cornstarch with the cold water until smooth. Stir the mixture into the beef and cook for 1 minute, or until the sauce thickens.

Stir in the green onions and sesame seeds.

Divide the steamed rice and vegetables among six bowls. Spoon the beef mixture over the top and serve warm.