Creating an incredible Chicken and Green Bean Stir-Fry is straightforward if you follow these simple steps:

1. Prepare Ingredients: Slice the chicken breasts and trim the green beans. Mince the garlic and ginger.
2. Marinate Chicken: In a bowl, combine sliced chicken with soy sauce, oyster sauce, and cornstarch. Let it marinate for about 10 minutes.
3. Heat Oil: In a large skillet or wok, heat 2 tablespoons of vegetable oil over medium-high heat.
4. Cook Chicken: Add the marinated chicken to the skillet and stir-fry for about 5-7 minutes, or until cooked through and lightly browned. Remove from pan and set aside.
5. Stir-Fry Vegetables: In the same pan, add a bit more oil if needed. Add the minced garlic and ginger. Stir-fry for about 30 seconds until fragrant.
6. Add Green Beans: Toss in the trimmed green beans and stir-fry for around 3-4 minutes until they are bright green and crisp-tender.
7. Combine Ingredients: Return the cooked chicken to the skillet. Mix well, ensuring everything is evenly coated in the sauce.
8. Adjust Seasoning: Season with salt, pepper, and red pepper flakes if desired. Stir well for another minute to heat everything through.
9. Serve Hot: Remove from the heat and set aside, ready to serve immediately.

With these steps, you’ll have a scrumptious Chicken and Green Bean Stir-Fry that showcases incredible flavors and textures.