For the sauce: Combine all the ingredients in a small bowl. Set aside.
Toss the sliced chicken thighs with the cornflour until evenly coated.
500 g chicken thighs, 1 tablespoon cornflour
Heat the oil in a large frying pan or wok over medium–high heat. Add the chicken and stir-fry until cooked through and golden brown, about 5–7 minutes. Add a little of the sauce in the last minute and stir through. Remove the chicken and set aside.
1 tablespoon oil, 500 g chicken thighs
In the same pan, add a little more oil if needed. Sauté the onion for about 2–3 minutes. Add the bok choy and broccolini and stir-fry until the vegetables are tender-crisp, about 2 minutes. Then toss through the garlic and ginger. Pour the remaining sauce over the vegetables. Toss everything quickly.
1 brown onion, 3 bunches bok choy, 1 bunch broccolini, 2 cloves garlic, 3 cm ginger piece
Return the chicken to the pan, add the cashews and stir-fry for another 1 minute to heat through. Serve on white or brown rice.
500 g chicken thighs, 3/4 cup cashews, brown or white rice