Cook the Beef: Heat vegetable oil in a large skillet over medium-high heat. Add ground beef and cook until browned, breaking it apart with a spatula. Drain excess fat if needed.
Make the Sauce: Add garlic and ginger to the beef, then stir in soy sauce, brown sugar, honey, rice vinegar, sesame oil, and red pepper flakes.
Thicken the Sauce: Stir in the cornstarch slurry and cook for 1-2 minutes until the sauce thickens and coats the beef.
Assemble the Bowls: Divide the cooked rice into bowls. Top with teriyaki beef, steamed broccoli, and shredded carrots.
Serve: Garnish with green onions and sesame seeds. Enjoy hot!