Cut the chicken into small pieces, season with salt and pepper and rest for 20 minutes. Add oil in hot pan, cook the chicken for few minutes. Then add in onion and cook for 3 to 5 minutes. Add in mix vegetables and cook for two minutes, season with salt and pepper. I

For the white sauce, add butter in a saucepan, cook until butter melted, then add in flour, mix it quickly. Then gradually add in milk, keep stirring until smooth. Bring it to boil, then simmer until the sauce is thicken. Season with salt and pepper.

Mix the white sauce with chicken and vegetable. *Add more milk if the sauce is too thick)

Place the rice in baking dish, pour the chicken and vegetable on top. Sprinkle with cheese and pop in preheated oven at 200C, bake for about 10 minutes or until the cheese is melted. Enjoy!