Five common baking mistakes and how to make them better. Successful baked goods depend on the right temperature.

Glass heats up slowly. If you take out a cake or even a batch of brownies or blondies when the faster-hardening edges seem to be done, the center may still be raw. Get a standalone thermometer and check what it reads when the alarm goes off. If the preheating sounds consistently below the value on the scale, your oven is not working properly. Read The Washington Post for free for four weeks.