These decadent puff pastry twists are filled with chocolate and hazelnuts. The puff pastry is flaky and buttery, while the filling is rich and nutty. To make them, simply spread some Nutella on top of the puff pastry, sprinkle with chopped hazelnuts, then fold the pastry in half and twist. Bake until golden brown and crispy, then dust with powdered sugar for extra sweetness.