The term 'Dunkable Treat' refers to two popular desserts that can be dunked in a liquid such as milk or coffee. The first is an Oreo, a chocolate sandwich cookie with a creamy filling, which has been around since 1912. The second is a donut, a deep-fried pastry often covered in sugar or glaze, which has been around since the 19th century. Both of these treats are popular for dunking and can be found in many stores and restaurants.