Pretty and Polished: Slimming World Brownies. Works out as 17.5 syns in total for the whole tin (including the icing). So you would just need to cut them into however many squares you like and work out the individual portion's syn value. I used 75g of sweetner in the mix rather than the stated 150g. Also I made mine in cupcake cases to make it easier to divide into portions. Made 18 little cupcakes.