Heat a large skillet over medium-high heat. Add ground meat and cook, stirring, until no longer pink. Drain; return meat to skillet.
Add diced onion, sesame oil, and rice vinegar to the skillet. Cook, stirring, for a few more minutes (until onion is tender).
Add garlic, ginger, soy sauce, hoisin sauce (optional), coleslaw mix, and carrots to the skillet. Cook, stirring, for about 5-7 more minutes, or until cabbage is wilted.
Remove skillet from the heat. Stir in green onions and season with salt and pepper, to taste.