Kinder Bueno, Lotus, Nutella, pistachio… Stuffed cookies are the ones people ask for most. And the ones that fail most at home: the filling leaks, sinks or comes out hard.
The filling doesn't go in as it is. A spoonful of Nutella straight into the dough melts before the cookie and escapes. It has to be prepared beforehand.
The ratio matters. Too much filling and the wall bursts; too little and the cookie disappoints when you break it.
The seal decides everything. One thin spot and the filling finds its way out in the oven.
Every filling is different. A spread, a ganache or a caramel don't behave the same. What works for one ruins another.
A stuffed cookie isn't a cookie with something inside: it's a different cookie, with a different dough and technique.
👉 Learn the technique in The Fillings: the seal step by step and 8 flavours with exact grams, from Kinder Bueno to Red Velvet.