In a large skillet, brown the lean ground beef over medium-high heat until fully cooked, breaking it into small crumbles.
Drain any excess fat from the skillet to maintain nutritional targets.
Stir in the minced garlic and grated ginger, cooking for approximately 1 minute until fragrant.
In a small bowl, whisk together the soy sauce, brown sugar, sesame oil, red pepper flakes, and black pepper.
Pour the sauce mixture over the beef and stir to coat thoroughly.
Simmer the beef for 2 to 3 minutes until the sauce has slightly thickened and flavors are integrated.
Divide the cooked rice into four bowls and top each with an equal portion of the beef mixture.
Garnish with sliced green onions and sesame seeds before serving.