Follow these easy steps to create your teriyaki chicken masterpiece:

1. Prep the Chicken:Cut the chicken breasts into bite-sized pieces. This will help them cook quickly and evenly.
2. Make the Teriyaki Sauce: In a medium bowl, whisk together the soy sauce, brown sugar, rice vinegar, sesame oil, minced garlic, and minced ginger until well combined.
3. Cook the Chicken: Heat the vegetable oil in a large skillet over medium-high heat. Add the chicken pieces and cook until they are browned and cooked through, about 5-7 minutes.
4. Add the Sauce: Pour the teriyaki sauce over the cooked chicken in the skillet. Stir well to coat the chicken in the sauce. Let it simmer for about 3-4 minutes.
5. Thicken the Sauce: In a small bowl, mix the cornstarch and water until smooth. Pour this mixture into the skillet to thicken the sauce. Stir and cook for an additional 1-2 minutes until the sauce has reached the desired consistency.

With these straightforward steps, your easy teriyaki chicken will be ready in no time!