mix the cookie dough ingredients in a bowl until the dough is thick and well-combined.
add half of the mixture to a parchment lined bread loaf tray and even out.
place in the freezer for about 30 minutes, then remove, and add a thick layer of ice cream. see notes in text for what kind of texture the ice cream should be.
place back in the freezer for 2 hours and then remove and add the remaining cookie dough. place back in the freezer for an hour. to achieve the smooth texture on the top, flip over the cookie dough before cutting into bars. store in the freezer in an airtight container and enjoy!