The first Bakewell tart worked so well that I decided to make another for a meeting with some fellow teachers.
This time, though, I actually remembered that the recipe only made enough for a 9" tart and multiplied the ingredients by about 1.25. That should be enough for two extra inches, right? Well, no. I forgot the whole geometry thing; it turns out that an 11" pan has about half again as much area as a 9" pan.