Most electric ovens are multi-purpose and will have a fan-assisted setting and this is what I use. I find it is better to use this setting as it distributes the heat around the oven for more even, faster cooking than a conventional oven. If you use a conventional oven you will need to increase the temperature and the cooking time may be a little longer. It is best to consult your cooker manual for this as ovens will vary, but the table provided gives a general guide to the necessary temperature adjustments, as well as the equivalent Gas Mark and Fahrenheit temperatures.