I just tried to make these.
www.bbc.co.uk/food/recipes/speculaasbiscuitstra_90641
Now, I did think the addition of baking powder was a weird one for cut-out biscuits, and lo and behold, they spread out and now look nothing like little Chrsitmas trees.
So. Is it just me that's done it wrong, or is it them hairy bikers who shouldn't have included baking powder?