Brown ground beef in a large skillet over medium heat. Drain off any fat.
Add the minced garlic and saute for a minute or two.
Stir in the brown sugar, soy sauce, ginger, and ¼ tsp red pepper flakes.
Simmer for 5-6 minutes. Add more red pepper flakes to taste.
If desired, drizzle with sesame oil.
To serve, spoon beef mixture over hot cooked rice. Sprinkle with sliced green onions.
