Preheat the oven to 350° Fahrenheit.
In a large mixing bowl, mash the ripe bananas, using a fork.
Mash in the eggs, softened butter, and vanilla.
Using a wooden spoon, stir in the puffed quinoa, rolled oats, cocoa powder, baking powder, and dash of salt.
Fold in the chopped prunes and chocolate chips, if using.
At this point if your batter looks a bit runny, allow it to rest for 10-15 minutes.
Line a baking sheet with parchment paper. Using a 1/2 cup muffin scoop, scoop the batter onto the parchment paper, leaving an inch of room in between each cookie.
Bake in the pre-heated oven for 18 minutes.
Store in the fridge.