In a large bowl, combine the marshmallows, cool whip, and chocolate chips until well mixed.

In a baking pan (doesn't matter what size, but you may need two) lay graham crackers to cover to bottom.

Spread the cool whip mixture on top of the graham crackers, making sure it's relatively even.

Lay more graham crackers on top of the mixture--enough to cover most of it.

Place pan (or pans) in the freezer for a minimum of two hours. You can leave them for longer or shorter if you want, depending on the kind of texture you desire.

After freezing, use a knife to cut them up and share with your friends.