Crush graham crackers in a baggie with rolling pin until course crumbs. Set aside.
Using a whisk, whisk cream cheese in a large bowl until smooth.
Add pudding mix, milk and vanilla; whisking until smooth.
Fold in 2 ounces of whipped topping. Reserve 2 ounces cool whip to top parfaits.
To make two parfaits. The layering really doesn't matter - do whatever you think looks the best! Here's how I do the layers for my DH and I: layer each parfait with graham cracker crumbs, 1/4 banana, 1/4 pudding mixture, 1/2 ounce whipped topping, 1/4 banana, 1/4 pudding mixture, 1/2 ounce whipped topping and lastly remaining graham cracker crumbs.
Sprinkle with cinnamon.
Can be eaten immediately or set in the fridge for 15-20 minutes to allow crumbs to soften (not too long or they'll turn to mush). Enjoy!