Preheat oven to 200 degrees Celsius.
Place the potatoes in a baking dish and give them a good glug of olive oil, rub the oil all over them. Bake for 10 to 15 mins.
Once cooked, crushed the potatoes using a fork or a knife. Then add some olive oil and season with salt and pepper.
To cook the sardines, season the sardines with salt and pepper, then coat the fillets in rice flour.
Heat some extra virgin olive oil in a large frying pan on medium to high heat.
Place fillets in the pan and fry for about 2 minutes on each side, or until their meat separates from the bone easily. Pull the fish off the heat and set it aside.
In the same pan, saute the onions, garlic, olives, pine nuts, spinach, chilli, cayenne pepper, salt and pepper.
Once the onions, garlic and olives are soft, add the cooked fish.
Serving Suggestions: Serve spicy sardines over crushed baby potatoes with a drizzle of lemon juice.