Break the graham crackers in half to make 18 squares. Lay out 9 of the graham crackers in a square baking dish that's been lined with parchment or foil.
Whisk the softened cream cheese and powdered sugar together with a mixer on medium speed. Once the sugar and cream cheese are combined and smooth, add the softened Cool Whip and whip together for 1-2 minutes on medium speed.
Pour the Cool Whip mixture over the graham crackers.
Top with remaining graham crackers to make sandwiches
Freeze for at least three hours.
Once the sandwiches are completely frozen, lift them out of the baking dish by using the paper as handles, and cut into individual squares. Dip the edges in sprinkles, mini chocolate chip, or even graham cracker crumbs.