In a loaf pan, drop alternate scoops of ice cream in a random pattern to cover the bottom of the pan. Place a sheet of parchment over the ice cream and, using another loaf pan or your hands, press the scoops into a flat layer. Remove the parchment.
Scoop another alternating layer of ice cream onto the top of the flattened layer and flatten again. Repeat the process to make a third and final layer.