Stargazy Pie

Method

1. Preheat the oven to 200°C (390°F) and hard-boil 3 of the eggs for 10 minutes, then cool, peel, and slice them.
2. Arrange the sardines in a shallow ovenproof dish so that their heads poke upward over the rim, as is traditional in a Stargazy Pie.
3. Place the sliced hard-boiled eggs around the sardines in the dish and spread the mustard evenly over the filling.
4. Roll out the almond flour dough on a lightly floured surface and drape it over the dish, cutting slits to allow the sardine heads to protrude through the pastry.
5. Beat the remaining egg and brush it over the surface of the almond flour dough to create a golden glaze.
6. Bake the pie in the preheated oven for 31 minutes, or until the pastry is firm and deep golden brown.
7. Remove from the oven and allow to rest for 5 minutes before serving hot directly from the dish.