Wash, stem, and cut the beans in half. Pat dry thoroughly and set aside.
In a bowl, combine chicken with oyster sauce, soy sauce, dark soy sauce, cornstarch, sugar, and baking soda. Mix well and let marinate for 15 minutes.
Preheat your Blackstone griddle and spread a thin, even layer of cooking oil.
Sauté the minced garlic until fragrant. Add the marinated chicken and cook until fully done. Move the chicken to the side of the griddle.
Add more oil if needed, then place the green beans on the other side of the griddle. Add a splash of water and cover with a cooking dome for 1–2 minutes. The beans should remain slightly crisp.
Remove the dome and season the green beans with chicken bouillon, sugar, and salt. Toss the beans together with the cooked chicken until everything is evenly coated.
Transfer to a platter and serve hot with steamed rice. Enjoy!
