In a roomy mixing bowl, combine the finely chopped pecans with the crumbs, a pinch of salt, and the brown sugar. Give it a good stir so everything is nicely distributed.
Pour in the maple syrup along with the corn syrup, or Biscoff spread if you prefer a richer touch, and add the vanilla. Mix it all together until the mixture becomes sticky and holds when pressed, that is how you know it is just right.
Shape the mixture into small, neat balls, about an inch in size, and arrange them on a baking tray lined with parchment. If you would like them perfectly uniform, you can gently press the mixture into a mini silicone muffin pan instead.
Place the tray in the freezer and let them chill until firm, anywhere from 45 minutes to a couple of hours, depending on your patience.
Meanwhile, melt the chocolate chips slowly, heating in short intervals of about 30 seconds and stirring well each time, until the chocolate is smooth and glossy.
Take each chilled pecan piece and dip it into the melted chocolate, coating it fully, then return it to the lined tray.
Before the chocolate sets, finish with a sprinkle of extra chopped pecans or a touch of sea salt, if you like a little contrast.
Leave them at room temperature until the chocolate firms up completely, and they are ready to serve.