You may have set the control for your oven at those temps, but have you actually calibrated your oven to know that the temperature is correct? My ovens have been precisely calibrated to match the dial setting . . . 450F is 450F, 350F is 350F. But the ovens were not quite that accurate when they were first received from the factory. Most ovens are off by 25F (about 4C), which is more than enough to have a negative effect on baking. For example, I get perfect results with puff pastry dough in my ovens. But I was asked to bake some items at my church in ovens I had not checked for accuracy. It took nearly twice as long to get the pastry browned. My next trip to the church, I brought my oven thermometers and discovered that at the 375F setting, the temp was actually 340F. The digital control cannot be calibrated, so I now know to increase the oven temp setting by 35F to get the results I need. My guess is that your oven temp is lower than you think, so you may need to make the same kind of adjustment.

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