Put the ingredients for the dough in a bowl and stir with the hand mixer.
Cover a baking sheet with parchment paper and place the waffle cups on it. This is important because the chocolate in the waffle cups melts during baking and otherwise spills down. Fill the wafer cups 2/3 full with batter and bake at 170 degrees for about 15 minutes (chopsticks test). Let the cake cool down.
Melt the couverture in a water bath. Now dip the surface of the small cakes in the couverture and then sprinkle with sugar pearls. Shape the marzipan mixture into little balls as eyes and place a chocolate drop on each as a pupil and stick it onto the cake. It holds by itself, since the marzipan paste is very sticky. If you want, you can still use dark couverture for a better hold. Finally, cut a small slit in the cake with a knife and insert a mini butter biscuit into each.
Tip:
Since blue sugar pearls are not available everywhere, you can alternatively use coconut flakes and simply color them with blue food coloring.