What is a walnut cookie mold and where do I find one?
A walnut mold is a hinged metal form that shapes cookie dough into walnut halves. Find them at Russian grocery stores, specialty baking shops, or online retailers that carry Eastern European baking supplies.
Can I make these cookies without a walnut mold?
You can bake the dough as traditional round cookies and skip the shell shape, but the distinctive walnut appearance and hollow center for filling require the proper mold.
How long do oreshki cookies keep?
Store filled oreshki in an airtight container at room temperature for up to 5 days. They can be frozen unfilled for up to 1 month, then filled before serving.
Can I use a different filling instead of dulce de leche?
Yes, sweetened condensed milk caramel, chocolate ganache, or pastry cream work well. Traditional recipes sometimes use a cooked condensed milk caramel instead of store-bought dulce de leche.
Why are my cookies spreading or not holding their shape?
Ensure dough is chilled before molding, the mold is tightly closed, and the oven is fully preheated. Soft dough or under-baking can prevent the shells from setting properly.