Place avocado in a food processor and pulse until smooth. If you do not own a food processor, you can put the avocado in a bowl and smash it with a fork, working out all of the lumps.
Next, add cocoa and cinnamon and pulse/mix with an electric mixer.
Then add syrup, yogurt and peppermint extract.
Mix everything together so that pudding is smooth and place in two separate cups (or one larger cup). Put in the refrigerator for at least two hours or overnight.