Mix the eggs, oil, and sugar together.

Add in the baking powder, salt, and vanilla sugar, and mix.

Add in the flour and mix until a dough forms. (If dough is wet add in one to three tablespoons more flour, one at a time.)

In a separate bowl in all the ingredients for the crumbs together.

Roll out the dough and cut out circles. Fill with about one to one and 1/2 teaspoons of the crumb filling. Seal sides well.

Bake 15-18 minutes.