For the pastry, place macadamias, butter, sugar, flour and cinnamon in a food processor and process until the mixture forms coarse crumbs. Add iced water and pulse until it forms a ball. Remove dough from the food processor and gently shape into a flat disc. Wrap in baking paper or plastic wrap and refrigerate for 15 minutes.
Preheat oven to 150°C. Grease and line the base of 12 muffin cup moulds with circles of baking paper. Working in 2 batches, roll out half the pastry between 2 sheets of baking paper until 2mm thick. Gently place in the freezer for 5 minutes to cool. This will make the pastry easier to cut. Remove from freezer.
Using an 8cm round pastry cutter or upside-down glass, cut 6 circles out of the pastry. Using a small star cutter, cut 6 stars. Gently press each pastry circle into muffin moulds. Repeat with remaining dough. Place in the fridge to rest for 15 minutes.
Fill each pastry lined muffin mould with 1 tablespoon of fruit mince and place a pastry star on top. Place a half macadamia in the middle of each star. Bake for 25-30 minutes, or until golden. Allow to cool for 10-15 minutes before gently removing to a wire rack to cool completely.