Prepare the rice according to package directions so it’s ready by the time the beef is done.
Heat a large skillet over medium heat. Add the ground beef and break it up with a wooden spoon.
Cook until the beef is browned and no longer pink, about 5–7 minutes. Drain excess fat if needed.
Reduce heat to medium-low and add the minced garlic and ginger; stir for about 1 minute until fragrant.
Stir in soy sauce, sesame oil, brown sugar, and red pepper flakes if using.
Continue cooking for a few more minutes so the sauce coats the beef and thickens slightly.
Season with salt and pepper to taste.
To assemble, spoon cooked rice into bowls and top with the seasoned beef.
Garnish with sliced green onions and sesame seeds. Add optional toppings like cucumber, kimchi, steamed veggies, or a fried egg for extra flavor and texture.