Cream the butter and sugar in a free standing mixer. Mix until pale and fluffy. Add the eggs and continue to mix until completely combined.
Add the salt, vanilla, almonds and flour to the mixture. Mix until just combined.Turn out onto a clean surface and knead lightly until a dough is formed. Make sure not to over mix otherwise the pastry will become tough and dry. Chill in the fridge for at least 30 minutes to an hour until firm.
Roll out the chilled pastry to a thickness of 2-3mm. Make sure to lightly flour the surface and rolling pin. Lift up the dough and place on top of each of the tart cases, using your fingers to gently ease the pastry into the case pressing into the corners and edges.
Using a knife, trim off the excess pastry. Chill in the fridge for 30 mins.
Preheat the oven to 170 degrees celsius (fan).
Line the tarts with baking paper or cling film and fill with uncooked rice or baking beans, then place in the oven for 15 minutes. Then remove the rice and clingfilm and cook for another 5 minutes. It should be golden brown all over the pastry. Remove from the oven and leave to cool.