Smoked haddock quiche
Preheat the oven to 180°C/350°F/Gas mark 4. Roll out the pastry and use to line a 23cm/9in flan dish.
Melt the butter in a saucepan, and sweat the onion until soft. Stir in the flour, then the milk, and bring to the boil, stirring continuously.
Remove the sauce from the heat and add the eggs and half of the cheese. Season with salt and pepper.
Arrange the flaked fish and tomatoes on the pastry, and pour the sauce over the top. Sprinkle with the remaining cheese.
Bake in the oven for 30–40 minutes until set and golden brown.