Pre-heating an oven assures the item that is to be baked will completely bake in the time noted on the recipe.
It also assures that the ingredients in the item to be baked will not have time to separate or otherwise turn unsatisfactory as it rests, waiting for the oven to reach baking temperature, before the cooking process begins.
Answers
March 16, 2010
Preheating an oven is important in insuring that the reciepe process yealds the best results.
March 28, 2010
Pre-heating an oven assures the item that is to be baked will completely bake in the time noted on the recipe.
It also assures that the ingredients in the item to be baked will not have time to separate or otherwise turn unsatisfactory as it rests, waiting for the oven to reach baking temperature, before the cooking process begins.