1⁄2 cup corn syrup
1⁄2cup peanut butter
4cups Rice Krispies
2cups ice cream (half of a l litre container) or 2 cups frozen yogurt, very slightly softened (half of a l litre container)
In a medium bowl, stir together corn syrup and peanut butter.
Add cereal and stir until well coated.
Press mixture firmly and evenly into a buttered 9″x13″ pan.
Place in freezer until firm, about 15 minutes.
Cut cereal mixture in half crosswise.
Spread one half with softened ice cream or frozen yogurt.
Top with second half of Rice Krispie mixture to make one very large sandwich.
Freeze until firm, about 2 hours.
Cut large sandwich into 2″ portions (using ruler again).
Wrap individually in foil paper or freezer wrap and store in freezer until needed.