SHEET PAN SUCCESS
Preheating the pan allows moisture to evaporate almost instantly (due to heat coming from the hot surface, as well as from the oven) so browning and caramelization occur more quickly and evenly.
Preheating the pan allows moisture to evaporate almost instantly (due to heat coming from the hot surface, as well as from the oven) so browning and caramelization occur more quickly and evenly.