Start by cubing the boneless skinless chicken thighs into bite-sized pieces. Season them lightly with kosher salt and pepper.
In a large skillet or wok, heat 2 tablespoons of olive oil over medium-high heat. Once the oil is shimmering, add the chicken.
Add the seasoned chicken to the skillet. Cook for about 5-7 minutes, or until the chicken is browned and cooked through. Stir occasionally for even cooking, then remove the chicken from the skillet and set aside.
In the same skillet, add the minced garlic and the white parts of the scallions. Sauté for about 1-2 minutes until fragrant.
Add the hoisin sauce, chicken stock, and low sodium soy sauce to the skillet. Stir well and bring to a gentle simmer.
Carefully add the dried Thai bird eye chilies to the sauce. Adjust the amount based on your heat preference. Let it simmer for another 2-3 minutes.
Return the cooked chicken to the skillet, along with the lightly steamed broccoli. Toss everything together until well coated with the sauce.
Add the toasted cashews and the green parts of the scallions. Stir to combine all the ingredients and allow the cashews to warm slightly before serving.
Serve your Spicy Cashew Chicken over a bed of white or brown rice. Garnish with additional scallions or cashews if desired.