Step 1 Cook rice according to packet instructions; drain and cover.
Step 2 Meanwhile, spray a saucepan with olive oil and set over medium heat. Cook chicken in 2 batches, stirring, for 2–3 minutes, or until golden; remove from pan.
Step 3 Return pan to heat; spray with oil. Cook onion until soft. Add curry paste, garlic and cumin; cook, stirring, for 1 minute. Add sweet potato and coconut water; bring to the boil. Reduce heat to low, cover and simmer for 15 minutes, or until potato is tender.
Step 4 Return chicken to saucepan with broccoli and cauliflower; cover and simmer for 5 more minutes, or until chicken is cooked through.
Step 5 Top rice with curry, garnish with coriander leaves and serve.