Chop cabbage, mince garlic and ginger, and slice green onions.
Heat 1 tbsp sesame oil in a large skillet or wok over medium-high heat.
Add ground beef and cook until browned, breaking it apart as it cooks. Drain excess fat if needed.
Push beef to one side, add remaining sesame oil, garlic, and ginger. Stir 30 seconds until fragrant.
Add chopped cabbage and stir-fry 4–6 minutes until slightly tender but still crisp.
In a small bowl, mix soy sauce, oyster sauce, rice vinegar, chili paste, and sweetener.
Pour sauce into the skillet and toss everything well to coat. Cook another 2–3 minutes.
Stir in green onions and sprinkle toasted sesame seeds on top.
Serve hot with rice, noodles, or cauliflower rice for a low-carb option.