They certainly are especially popular in the Midwestern United States, especially in Iowa. We have seen them in bakeries and enjoyed them from home cooks during our trips there in the summer. Interestingly, the best scotcheroos recipe also varies a bit from state to state – everyone has their own favorite that they swear by! Some use corn cereal rather than rice, or maple syrup instead of corn syrup.  The name also changes depending where you are. They may be called Gold Bars or O’Henry Bars, for example.