Dissolve the yeast in lukewarm milk and add to the other ingredients. Knead everything together, preferably with a food processor. Let the dough rise for approx. 20 minutes and knead again.
Roll out the yeast dough about 1.5 - 2 cm thick, cut out circles with a glass and place them close together in a baking dish or on a baking sheet and let rise for another 10 minutes.
In the meantime, weigh the crumble ingredients and knead with a fork.
Slightly moisten the cut out yeast dough pieces with water, then cover with the sprinkles and place in the oven.
Bake the rolls for approx. 20 minutes at 200 ° C top / bottom heat. The sprinkles should only get a little color.