
Start by mashing the ripe bananas in a cookie tin and mash them until they turn into a purée.
In a small bowl, add the semisweet chocolate.
Microwave it at maximum power in 30-second intervals, always stirring after each interval until completely melted.
Add this chocolate to the banana mixture and mix again to incorporate.
Then add the juice of one lemon, the vanilla extract, the ground cinnamon and mix again.
Add the butter cookies, breaking them into smaller pieces and mix to incorporate.
Cover the tin, place it in the refrigerator, and let it chill for at least 3 hours.
After this time has passed, unmold the dessert onto a nice serving plate.
Serve.