Ingredients
Cooking oil spray, to grease
3 sheets store-bought frozen shortcrust pastry
1 free-range egg white
5 free-range egg yolks
1 free-range egg
2 Tbsp custard powder
1 tsp vanilla extract
500ml thickened cream
250ml milk
125g caster sugar
1 whole nutmeg
Method
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Preheat oven to 200°C fan- forced (220°C conventional). Lightly grease 8 x 10cm round foil pastry cases with cooking oil spray. Cut pastry sheets to fit tart shells. They will shrink a little, so allow them to overhang slightly. Line pastry cases with baking paper and fill with baking weights or dried beans to blind bake.
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Bake for 15 minutes and reduce heat to 140°C fan-forced (160°C conventional). Remove tarts from oven and remove baking paper and weights. Brush inside of cases with egg white and cook for a further 5 minutes. Remove from oven and carefully trim off excess pastry using a small sharp knife. Set aside to cool.
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Put yolks, egg, custard powder and vanilla in a large bowl and whisk until smooth. Put cream, milk and sugar in a medium saucepan over medium heat. Heat, stirring, until just about to simmer. Then pour hot milk mixture into egg mixture, whisking constantly as you pour.
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Strain mixture through a fine sieve, over a large jug. Put tart shells on 2 large oven trays, then pour custard mixture evenly into pastry cases. Bake for 25 minutes, then check if the custard has set. Cook a little longer if necessary.
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Remove from oven and grate fresh nutmeg over the top. Allow tarts to cool before serving.