Line a 9 inch x 9 inch baking dish with parchment paper and preheat oven to 170°C Fan
Melt the butter, sugar and golden syrup together in a small pot on low heat until completely melted
Add the dry ingredients (oats, cinnamon, salt) into a mixing bowl
Pour the hot sugar mixture over the dry ingredients and stir
Add half of the flapjack mixture into the prepared dish
Add the mincemeat layer next, followed by the remaining flapjack mixture
Press down with a spoon and bake for 30-35 minutes until golden brown
Allow to cool to room temperature, then pop into the fridge to fully set for 3 hours
Serve cut into squares
