Gently heat the vegetable oil over a medium heat in a large saucepan / casserole pot. Add the curry paste and sauté the Thai green curry paste over a medium heat for about 1 minute until fragrant.
Reduce the heat then gradually pour in the coconut milk. Stirring until the oil surfaces. About 3 minutes.
Add the chicken and kaffir lime leaves and allow to simmer for about 7 - 8 minutes until the chicken is cooked and no longer pink inside when cut in half.
Once the chicken is cooked stir in the fish sauce, green pepper, red pepper, and mushrooms. Simmer for about 15 minutes.
Turn off heat and stir in lime juice and coriander leaves. Remove kaffir lime leaves.
Serve with boiled or steamed basmati rice.
Notes
*Nutrition label does not include suggested serving of Basmati rice.