Hi, Gert. One way to get the layers to adhere to each other instead of pulling away is to brush the dough with milk before spreading your filling on it; the milk seems to bond with the dough a little better. Melted butter brushed right on dough is almost a guaranteed way to have the layers separate. If your filling has melted butter in it, try mixing it with the sugar and cinnamon to make a paste before filling the dough. Susan

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