Melt the chocolate carefully in a water bath and stir in the agave syrup.
Powder the speculoos with a hand blender and mix with the soy milk, then add to the chocolate. The consistency should be quite runny, otherwise add a small dash of soy milk.
Fill into glasses, close and let cool in the fridge overnight.
Coming out of the refrigerator, the spread should have a similar consistency to nut nougat cream.