Dry ingredients in: Sift the plain flour into a large bowl and add the salt (and icing sugar if you’re making sweet shortcrust pastry.)
Rubbing in method: Add the cubed cold butter, toss through the flour then use your finger tips to rub the butter in the flour. You want your butter and flour to look like breadcrumbs or ground almonds.
Wet ingredients in: Use a fork to stir the beaten egg in.
Add 1 tbsp of cold water and use the knife to bring everything together to make a dough, only adding more water if needed. You want the pastry to just hold together when you pinch it between your thumb and finger.
Shape: Tip the mix onto the worktop and use your hands to bring it together and shape into a disk.
Time to chill: Wrap in cling film and pop in the fridge for 1 hour.
To make a 23cm tart case:
Out of the fridge: Bring the pastry out of the fridge for 10 minutes to warm up a little.
Roll with it: Lightly flour your worktop and rolling pin, then roll your pastry out to a large circle about 3mm thick.
Into the dish: Carefully lift the rolled pastry onto your 23cm tart dish and use your hands to gently push the pastry in the sides of the pan. Try not to stretch the pastry while you’re doing this. Use your rolling pin to roll the excess pastry from the top of your tart case.
Docking: Use a fork to prick the base of the tart case all over, then place in the fridge for at least 30 minutes.
Preheat the oven: Heat the oven to 180°C fan/200°C/400°F/Gas Mark 6.
Weigh it down: Line the tart case with scrunched up baking paper then fill with baking beans or dry rice.
First bake: Bake for 12-15 minutes until the edges are turning golden, then carefully lift the parchment paper and baking beans from the case.
Second bake: Place the tart case back in the oven for 10-15 minutes until golden all over. (If you are going to use the tart case for something that needs baking for 30 minutes or more, reduce the second cook time to 5-10 mins.
Third bake: Gently brush the beaten egg all over the inside of the tart case then place back in the oven for 2 minutes. (This helps make sure any gaps are filled in so your filling won’t leak out.)
Cool it: Leave the tart case on a cooling rack to cool completely before using.
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