Beat the softened butter with the sugar and egg yolk until light and fluffy. Sift in the flour with the salt and cinnamon and knead the dough. Gather it into a ball and chill in the fridge for one hour.

While the dough rests, make the icing: whisk the egg white, gradually adding the powdered sugar, and add the lemon juice at the end.

Draw a bunny template, roll out the dough, place the template on top and cut around it. Cut and shape the paws separately, and cut the mini kulichi freehand.

Place the cookies on a floured baking sheet and bake for 15 minutes at 180°C.

Let the cookies cool, then decorate with the icing. Enjoy!