Size Matters — Baking Pan Sizes by Hedy Goldsmith in How-to, July 18th, 2012
Yes, pan size matters when it comes to baking times and temperatures.
Have you ever had cake batter ready to go into the oven and realized you have the wrong size cake pan? Panic sets in. What do you do? There’s always a pan you can sub out for another size. It’s not the end of the world, trust me. I have a few tips I keep up my sleeve.
If, for example, your recipe calls for an 8-inch cake pan and you only have a 9-inch, relax, no problem. Just increase the oven temp by 25 degrees F and decrease the bake time by a quarter.
In this particular example, since your pan is 1 inch larger, more surface area will be exposed. The liquid in the cake batter will evaporate quicker, which means it will bake faster. To compensate, just increase the temp and decrease the baking time. Are you a little calmer now?