01 -
In a medium bowl, combine diced chicken with cornstarch and tamari. Toss with a fork to coat thoroughly.
02 -
Heat avocado oil in a large skillet over medium-high heat. Cook chicken in batches, ensuring pieces don't touch, for 3-4 minutes on the first side and 1-3 minutes on the second side until fully opaque with no pink inside. Transfer cooked chicken to a clean plate and repeat with remaining pieces, adding more oil as needed.
03 -
While the chicken cooks, combine water, tamari, maple syrup or honey, rice vinegar, toasted sesame oil, garlic, ginger, and red pepper flakes (if using) in a bowl or liquid measuring cup. Whisk until well incorporated.
04 -
In a small bowl, whisk together cornstarch and water to create a smooth slurry.
05 -
Reduce pan heat to medium-low after all chicken is cooked. Add the cornstarch slurry to the sauce mixture and whisk to combine. Pour sauce into the warm pan and whisk for 3-5 minutes until bubbling, thickened, and more translucent. The sauce is ready when you can see the path of your whisk.
06 -
Return cooked chicken to the pan and coat with sauce to heat through. Sprinkle with sesame seeds before serving.