Add flour, salt and lard to a food processor. Pulse quickly in short bursts until lard is broken down and some pieces are about the size of peas.
Add water in spoonfuls, pulsing after each entry, until most of the dough is holding together. You may need a little more or less water.
Dump contents of food processor onto plastic wrap or parchment paper. Press into a disk, cover well with plastic wrap and refrigerate for about 20 minutes.
Roll dough on a floured surface until about ⅛ inch or ¼ centimetre thick. Using a thin glass or round cutter, cut circles slightly larger than the diameter or the tart tin openings. Press remaining dough together, roll again and continue to cut circles until there are enough for each tart.
Lower circles into tart tins and press gently into the sides to make the shape. Scrape off extra pastry for a clean top. Refrigerate tart shells if filling is not made yet.
Melt butter in large mixing bowl. Allow to cool slightly before adding coconut and remaining filling ingredients, except for jam. Mix well.
Add 1 heaping teaspoon of jam to bottom of each tart. Top with 1 heaping Tbsp of coconut filling. If there are extra tart shells, they can be filled with jam.
Bake for 20-22 minutes until pastry is golden and filling is browning and puffed.
Cool sheet pan on a wire rack, then remove tarts when cool enough to handle.