Creating a delicious Classic Chicken Stir Fry can be straightforward if you follow these steps:

1. Prep Your Ingredients: Slice the chicken breasts and chop all vegetables into bite-sized pieces.
2. Make the Sauce: In a small bowl, mix the soy sauce, oyster sauce (if using), cornstarch, and a bit of water. Set aside.
3. Heat the Oil: In a large skillet or wok, heat the vegetable oil over medium-high heat.
4. Cook the Chicken: Add the sliced chicken and season with salt and pepper. Sauté until it starts to brown, about 5-7 minutes.
5. Add Garlic and Ginger: Stir in the minced garlic and ginger, cooking for another minute until fragrant.
6. Toss in Vegetables: Add your mixed vegetables to the skillet. Stir fry for about 4 minutes until they are tender-crisp.
7. Add the Sauce: Pour the sauce mixture over the chicken and vegetables. Stir well to coat everything evenly. Cook for an additional 2-3 minutes until the sauce thickens.
8. Finish with Sesame Oil: Drizzle the sesame oil over the stir fry and give it a final toss.
9. Remove from Heat: Take the skillet off the heat once everything is cooked and well-combined.
10. Serve: Spoon the stir fry over cooked rice or noodles for a complete meal.

These simple steps will guide you in creating an incredible Classic Chicken Stir Fry effortlessly.