Preheat your oven to 180° Celsius (150° Celsius for a fan oven).
Whilst your pilaf is steaming take an oven proof dish and grease the base and edges liberally with butter.
Now cover the base and edges with 1 layer of your anchovy fillets with the skin side down, against the bowl. If you are using a circular or dome-shaped bowl, you can layer your anchovies in circular patterns if you like.
Keep placing the anchovy fillets until you have no gaps.
Give your pilaf a stir and start to place it into your anchovy casing.
Once you reach the top of your bowl, if you have any anchovy fillets protruding, fold them all inwards towards the centre.
Now cover the top of your rice with anchovies, too, so that your pilaf is completely encased.
Drizzle a little olive oil over the top of your hamsili pilaf and place in the oven.
After 20-25 minutes, remove your hamsili pilav from the oven and serve.
If you have used a shallow oven dish, you can serve in slices as you would a pie, straight from the dish.
If you want to present your hamsili pilav as a centrepiece, place an inverted serving plate over the top of your hamsili pilav. With one hand on top of the plate and the other under your oven dish, turn them over so that your hamsili pilaf is now upside down on your serving plate.
Tap around the dish and then carefully remove to reveal your hamsili pilav.
Garnish with fresh lemon slices and sprigs of dill.