Place the oil and onion in a large pan, fry for 5 mins. Add the garlic fry for 1 min.
Pour in the coconut milk, the spinach, salmon fillets and is dried tomatoes. Top the salmon with the mustard and thyme. Stir a little so the spinach wilts.
Bring to a simmer and cook for 10-15 mins until cooked through. Season and serve.