Set a nonstick skillet on medium heat and once hot, add the oil and onion and cook for 2 – 3 minutes until the edges of the onion turn brown.
Then add the spices and sauté for 2 – 3 minutes or until fragrant.
Add the chicken and pour in the light coconut milk.
Stir and bring everything to a gentle simmer.
Add the spinach on top to wilt, then cover and cook for 1 – 2 minutes or until spinach is completely wilted. Season to taste with sea salt & pepper.
If you desire a thicker, creamier curry, simply add arrowroot or cornstarch slurry to the curry and stir immediately to thicken.
Let it cool slightly to thicken more, then enjoy with rice or by itself.
Garnish with onion, red chili flakes and/or lime juice.