Prepare the puffed quinoa: warm up a large pot over medium heat, when it's hot (should take about a couple of minutes) pour the quinoa into it, making sure the quinoa stays in one layer, close the lid, and shove the pot gently just a bit from one side to the other every few seconds. Listen carefully to the quiet crackle pops, and when you hear no more crackles (1-2 minutes) pour it straight into a bowl. Notice: the puffed quinoa popped state is only the tiniest bit larger than its unpopped state (nothing like popcorn!). The difference between crispy puffed quinoa and burned quinoa is a matter of seconds, so pay close attention to this part.
Warm the cocoa butter, cocoa powder, peanut butter and maple syrup using a Bain-marie (or simply in a cup over a pot with boiling water) until it melts and combines, while stirring continuously. Make sure not to get water into the chocolate mix.
Add in the puffed quinoa and mix to combine.
Pour into the desired shape molds, and place in the freezer.
It hardens within minutes. Keep in the fridge or freezer, makes about 20 small truffles.