I know it isn't exactly the same taste, as it doesn't have the cream flavor, but if you haven't had an It's It, you really should. Granted, they are made in San Francisco so I am not really sure if they are available nationwide or I'm just privileged to have access to the greatest dessert item of all time, but if you can find them, they are wonderful.
A legend of San Francisco, created in 1928 and just as delicious and mouth watering today, as it was on its creation day nearly 100 years ago.
www.itsiticecream.com
The pic doesn't really do it justice, but it is ice cream sandwiched between two oatmeal cookies (no raisins, thank Baby Jesus), all dipped in a hard chocolate shell.