Make the sauce: In a small bowl, whisk soy sauce, brown sugar, rice vinegar, gochujang (or red pepper flakes), and sesame oil.
Set aside.
Prep the aromatics: Mince garlic and ginger. Slice the green onions, keeping whites and greens separate. Prep your carrot and cucumber.
Brown the beef: Heat a large skillet over medium-high.
Add lean ground beef and cook, breaking it up, until no longer pink, about 4–6 minutes. If there’s excess fat, blot or drain to reduce calories.
Add aromatics: Stir in garlic, ginger, and the white parts of the green onions. Cook 1–2 minutes until fragrant.
Sauce it up: Pour in the sauce.
Stir and simmer 2–3 minutes until the beef is evenly coated and the liquid slightly thickens.
Taste and adjust: Add a splash more soy for salt, a pinch of sugar for balance, or extra gochujang for heat, as needed.
Build the bowls: Add a scoop of steamed rice or cauliflower rice to each bowl. Top with a generous portion of beef, then add cucumber, carrot, and the green onion tops.
Finish: Sprinkle with sesame seeds. Add lime wedges or a spoonful of kimchi if you like a tangy kick.