I have had several questions lately of how to convert oven temperatures and times from conventional oven to convection cooking. This is not a difficult task. It is called the Rule of 25. Take the conventional oven directions and reduce the temperature by 25 degrees, ie., say the temperature is listed at 400 degrees, for convection subtract 25 from 400=375 degrees. Then take 25% of the time and reduce the time by that number. 40 minutes – 25%=10 minutes. So your convection settings would be 375 degrees for 30 minutes. That is all there is to it. Have fun!