These frozen s'mores are everything you love about this nostalgic favorite, but in a chilled ice cream sandwich version. They're so easy to make—no need to turn on the oven—and they will disappear quickly.
Line a 9x13-inch baking pan with 2 sheets of parchment paper, positioning them perpendicular, so that the parchment hangs about 2 inches over all 4 sides of the pan.
Arrange 15 graham cracker halves in a single layer over the bottom of the pan so that they are touching.
Combine the cream cheese and marshmallow crème in a large bowl, and beat with an electric mixer on medium speed until smooth and blended. Fold in 2 cups of the whipped topping until just combined. Dollop the marshmallow mixture onto the graham crackers, then spread into an even layer.
Combine the cream and instant chocolate pudding mix in the same bowl, no need to wash ot. Whisk until smooth and thickened. Fold in the remaining 1 cup whipped topping until just blended. Spread evenly over the marshmallow mixture. Arrange the remaining graham cracker halves over the chocolate mixture. Cover and freeze until firm, at least 8 hours.
When ready to serve, grasp the excess parchment and transfer to a cutting board. Cut into 15 squares, using the graham cracker squares as a guide.
Notes
To store the bars, wrap each square individually with parchment paper and place in a zip-top freezer bag for up to 3 months. Thaw in the refrigerator.