Heat a little oil in a medium saucepan on a medium high heat. Add chicken and stir fry until well browned and almost cooked through. Remove chicken and keep warm.
Add a little more oil and the curry powder to your pot. Cook for 30 seconds then add the coconut milk and cauliflower.
Simmer covered for 10-15 minutes or until the cauliflower is tender.
Stir in peanut butter. Taste and season with salt (or more curry powder) as needed. Return chicken to the pan and bring back to a simmer.
To serve, divide between two bowls and top with coriander leaves.