Spoon the vanilla yogurt into a large bowl or glass tupperware, smoothing it out evenly.
Slowly pour the espresso over the yogurt and mix until combined.
Gently press the whole Biscoff cookies into the yogurt, standing upright around the edges and nestling a few into the center. Cover the bowl or Tupperware with a lid.
Chill for 4-6 hours in the fridge.
Remove from fridge and dust generously with cacao powder. Serve and enjoy!