First, a note on mixed spice: it's a staple ingredient of British desserts and cakes, and you can make it by mixing the following (all ground, dried spices): 2 tbsp cinnamon, 1 tbsp allspice, 1 tsp nutmeg, 0.5 tsp each of cassia, ginger, coriander and cloves.
Now the recipe: put everything except the pastry into a bowl and mix it well. Heat the oven to 425F, and roll out the pastry to about 9 inches square. Cut the pastry into nine 3-inch squares. Put 1 tsp of the mix into the center of each square, moisten the edges with milk or water and seal them together to make a bag containing the mix. Make sure all the edges are sealed tight, turn the bag over so that the sealed edges face downwards, and gently flatten it against the table until you can feel the filling pushing against the pastry. Pat the sides a bit until it's roughly circular.
Now make two parallel cuts most of the way along the top of each cake, so that the filling shows through. Put the cakes on a greased baking sheet, brush with milk and dust with sugar, and then bake until golden (10-20 minutes, depending on your oven).
From the Dinner Co-op