The key to a successful stir-fry is preparation and speed. This method, which includes a quick blanch for the beans, guarantees that every component is perfectly cooked—tender chicken, crisp-tender beans, and a flavorful sauce—all in one pan.

1. Prepare the Sauce: In a small bowl or liquid measuring cup, whisk together all the sauce ingredients: chicken broth, soy sauce, oyster sauce, rice vinegar, honey (or brown sugar), cornstarch, and sesame oil. Whisk until the cornstarch is fully dissolved and the mixture is smooth. Set this aside. Mixing the sauce first ensures it combines evenly and is ready to be poured into the hot pan at a moment’s notice.
2. Velvet the Chicken: Pat the chicken breasts dry with a paper towel. Slice them thinly against the grain, about 1/4-inch thick. In a medium bowl, toss the chicken slices with 1 tablespoon of soy sauce, 1 tablespoon of cornstarch, and 1 teaspoon of sesame oil. Use your hands or tongs to ensure every piece is lightly coated. Let the chicken marinate for at least 15 minutes while you prepare the other ingredients. This “velveting” technique is crucial for juicy, tender chicken.
3. Blanch the Green Beans (Recommended Step): Bring a medium pot of water to a rolling boil. Add the trimmed green beans and cook for just 2-3 minutes. They should be bright green and slightly tender but still have a distinct crunch. Immediately drain the beans and rinse them under cold water (or plunge them into an ice bath) to stop the cooking process. This step, known as blanching, ensures your beans are perfectly cooked and vibrantly colored without having to steam them for too long in the wok, which can overcook the other ingredients.
4. Sear the Chicken: Heat a large skillet, wok, or cast-iron pan over high heat. Once it’s very hot (a drop of water should sizzle and evaporate instantly), add 1 tablespoon of high-smoke-point oil. Swirl to coat the pan. Carefully add the marinated chicken in a single layer, being careful not to overcrowd the pan. You may need to do this in two batches. Let the chicken sear without moving for 2-3 minutes per side, until it’s golden brown and cooked through. Remove the cooked chicken from the pan and set it aside on a plate.
5. Sauté the Aromatics: Reduce the heat to medium-high. If the pan is dry, add another teaspoon of oil. Add the minced garlic and ginger to the pan and stir-fry continuously for about 30 seconds until they are fragrant. Be careful not to let them burn, as burnt garlic will make the entire dish bitter.
6. Combine and Sauce: Add the blanched green beans to the pan with the garlic and ginger. Sauté for 1-2 minutes to heat them through and coat them in the aromatic oil. Return the cooked chicken to the pan. Give your prepared sauce a quick final whisk (the cornstarch may have settled) and pour it all over the chicken and beans.
7. Thicken the Sauce: Continue to cook, stirring constantly, for 1-2 minutes. The sauce will bubble and begin to thicken almost immediately thanks to the cornstarch. As soon as it becomes glossy and coats the back of a spoon, it’s ready. Remove the pan from the heat immediately to prevent the sauce from becoming too thick or gummy.
8. Serve Immediately: Transfer the Stir-Fried Chicken with Green Beans to a serving platter. Garnish with toasted sesame seeds, sliced green onions, or red pepper flakes if desired. Serve hot with your favorite side.