Start by placing the chicken breasts between two pieces of plastic wrap. Use a meat mallet or rolling pin to gently pound the chicken to an even thickness of about 1/2 inch.
In a small bowl, whisk together the brown sugar, soy sauce, olive oil, minced garlic, grated ginger, black pepper, salt, and apple cider vinegar until well combined.
Place the pounded chicken cutlets in a resealable plastic bag or a shallow dish and pour the marinade over them. Seal the bag or cover the dish, and refrigerate for at least 15 minutes.
Heat a large skillet over medium-high heat. Add a drizzle of olive oil to the pan. Remove the chicken from the marinade, allowing the excess to drip off.
Once the skillet is hot, add the chicken cutlets to the pan. Cook for about 3-4 minutes on each side, or until the chicken is golden brown and cooked through.
Once cooked, remove the chicken from the skillet and let it rest for a minute.
Optional: Pour any remaining marinade into the skillet and cook for an additional minute to create a sauce, stirring constantly until slightly thickened.
Slice the chicken cutlets and drizzle the sauce over the top. Garnish with chopped green onions.
Notes
Serve with steamed rice or a fresh salad for a complete meal.