Weigh out the flapjack mix into a mixing bowl, add chopped mandarins and grated carrot (squeeze excess liquid from carrots using a clean tea towel) then select the beater attachment.
Measure out Mandarin juice and add to mixing bowl. Mix for 25-30 seconds until liquid has mixed in.
Scrape into a lined ½ gastro tin.
Bake at 170C for 30 minutes.
Leave to cool on a wire rack.
Cooking times and temperature may vary depending on oven used.