In a large bowl mix all the ingredients except the fresh parsley and the sardines.
Add the sardines in the bowl and mix gently so that all the sardines are coated.
Grease a pan (or cooking dish) with some olive oil and place the sardines so that they are all in one layer, drizzle any leftover dressing on the fish.
Roast for 15-17 minutes a bit more if they are larger sardines.
Remove, sprinkle with fresh parsley and a squeeze of lemon.