Truly it is the simple things that can make the biggest difference. It took me all these years to figure out a sure fire way to unmold a tart in a tart pan with removable bottom when it sticks to the bottom. I wasn't happy with heating a towel under hot tap water and wringing it out before applying it to the pan bottom as it never stayed hot enough for more than a few seconds and I was also concerned by the risk of moisture creeping into the bottom crust. One day during our step-by-step photo shoot, it suddenly hit me how to heat the bottom of the pan effectively without turning the tart upside down! I've added this simple technique to the upcoming Baking Basics but can't bear to make you wait for almost two years to know it, especially with all that holiday baking coming up. So here it is right now: Heat the bottom of a 9 inch cake pan by filling it with very hot water. Let it sit for several seconds until the pan feels hot. Empty the water and invert the pan onto a counter. Set the tart on top and let it sit for about 1 minute or until the bottom no longer feels cold. Repeat if necessary. You can also use a blow dryer to heat the inverted cake pan. If necessary, slide a thin-bladed knife or long metal spatula under the crust to release it.