To make the pastry, sift the flour into a large mixing bowl, add the cubed cold butter and use your fingertips to rub them together until they resemble breadcrumbs.
Add the sugar, egg and milk, and knead well to get an elastic dough.
Cover the dough in clingfilm and refrigerate for 30 minutes.
Use a rolling pin to roll the dough.
Use a large cookie cutter (mine is 10cm in diameter) to cut out rounds - reuse the dough until you get 12 rounds.
Arrange the dough circles onto a 12-hole muffin tin.
Add a teaspoon of mincemeat to every dough circle.
To make the frangipane, add the sugar and butter to a mixing bowl and use a hand mixer to cream them.
Add the egg and beat again, then add the ground almonds and almond extract and beat to get a smooth paste.
Top each pie with a teaspoon of frangipane, and bake in the preheated oven at 180 degrees Celsius (350 Fahrenheit) for 20-25 minutes or until golden and a skewer inserted in the middle comes out clean.
Remove from the oven and allow them to cool down completely.