The Tunnel of Bundt Pan allows you to easily create a surprising bundt cake with filling in the center! All you have to do is place the Tunnel of Bundt inside the cone of any bundt pan while baking, and remove when cake is done. How easy is that? You'll be left with a tunnel to add your favorite fillings. For example, add whipped cream, fruit, chocolate mousse, pudding, or anything else you can think of. The Tunnel of Bundt comes with recipes.