She would buy a box of those pre-made sugar cookies with the red and green sprinkles, sandwich some cool whip in between two of them, and freeze. They tasted like mini ice cream sandwiches. Since the box of cookies was only a dollar and so was the cool whip, this was an extremely cost efficient treat and slightly less fattening because there wasn't actual ice cream inside.
This can be done with any sort of cookie and you can add anything else to the filling that you might want, chocolate chips, sprinkles, fruit, even mini marshmallows!
Mmm....these look so good!