Take a large mixing bowl and place 500 grams of boneless chicken thighs cut into bite-sized pieces.
Sprinkle 1 tsp of salt and ½ tsp of black pepper over the chicken.
Add 1 tbsp of light soy sauce and 1 tbsp of cornstarch to the bowl.
Using a spatula, mix everything well to coat the chicken with the seasonings and cornstarch. Set aside the bowl for later use.
In a small mixing bowl, pour 2 tbsp of light soy sauce and 1 tsp dark soy sauce.
Add 1 tbsp of rice vinegar, 1 tbsp of oyster sauce, and 1 tsp fish sauce(optional) to the bowl.
Pour 2 tsp of sesame oil and 1 tbsp of honey into the sauce.
Add ½ cup of water and 1 tbsp of cornstarch to the mix.
Sprinkle ½ tsp of black pepper over the sauce and mix well until the cornstarch dissolves. Set aside the bowl for later use.
Place a pan on the stove over high heat and pour 2 tbsp of cooking oil into it.
Add ½ cup of cashew nuts to the pan and stir fry for 2-3 minutes or until they turn golden colour. Keep stirring while frying the cashew nuts to prevent burning.
Once the cashew nuts are done, transfer them to a plate and keep them aside for later use.
Pour another 2 tbsp of oil into the pan.
Add the marinated chicken pieces to hot oil.
Fry the chicken for 5-6 minutes and flip them using a spatula when one side is done.
Once the chicken is cooked through, transfer it to a plate and set aside.
In the same pan, add 1 tbsp of minced garlic and 1 tbsp of minced ginger.
Add 4-5 pieces of dried red chilies sliced into small pieces and stir fry for 30 seconds.
Add 1 medium-sized roughly chopped onion to the pan.
Add 1 medium-sized chopped green bell pepper to the onion and fry for another 30 seconds.
Toss in 2 spring onions cut into 1.5-inch pieces into the pan.
Stir to mix all the vegetables together.
Add the chicken you fried earlier to the pan.
Pour the prepared sauce over the chicken and vegetable mixture.
Stir to coat everything with the sauce and cook for another 1-2 minutes.
Add the fried cashew nuts back into the pan.
Give everything a final stir to combine,
Serve your Thai cashew chicken with steamed rice, and enjoy!