Patience is indeed a virtue — a phrase that rings true when waiting for the oven to heat up to its prescribed temperature. Food52 notes that when you don’t preheat your oven, you risk foods cooking unevenly, compromising their texture. For example, cookies can turn out hard crust rather than chewy, and some of your favorite recipes risk burning. The food site further elaborates that preheating your oven will make your food taste better and save you time. When you don’t preheat your oven, you generally have to cook your food longer than the recommended cook time. Translation: you should have just preheated your oven.
Additionally, Houston Methodist Leading Medicine reports there are safety reasons to preheat your oven. Preheating your oven ensures raw meats cook to what is considered to be their safe internal temperature. The health site uses the example of chicken breasts and explains that if a recipe calls for your fowl to bake at a certain temperature for a specific amount of time, that is not happening if you do not preheat the oven. They recommend always preheating and using a food thermometer to check your meat.
Aviv Service Today shares a pro tip. Because you immediately lose heat when you open the oven door, they suggest preheating your oven 75 degrees higher than the cooking temperature. Once you put your food into the oven, re-adjust back to the original temperature.