Finely mash the speculoos. This works best in a freezer bag with a rolling pin.
Choose and fill 2 beautiful glasses. First a layer of biscuits, about 0.5 cm thick, so that the bottom is well covered. Then a layer of applesauce, then yogurt, until everything is used up. However, you should finish with yogurt, that looks best.
Put the glasses in the refrigerator for at least 2 - 3 hours (if you like, overnight) and sprinkle with cinnamon before serving. Two roasted almonds on top also look good as a decoration (or Christmas cookies).