Preheat oven to 180 degrees (170 if using fan-forced). Grease and line a square slice tray or sponge roll tin with baking paper.
Weigh dates into TM bowl and roughly chop by pressing Turbo 5-6 times. Set aside.
Melt butter and golden syrup together on 80 degrees, Speed 2, 2-3 minutes (or until melted).
Weigh in dry ingredients. Mix on Reverse, Speed 2 for 10-15 seconds or until combined.
Press firmly into slice tin. Place into the oven for 20 minutes or until lightly golden.
To make the lemon icing, sift icing sugar into the TM bowl and add the butter and lemon juice. Beat on Speed 5 for 30 seconds until smooth and combined (scraping down the sides occasionally).
Spread icing over warm slice.
Stand at room temperature for 30 minutes or until icing has set. Cut into pieces.