Do you actually preheat your oven? Why or why not?

What Is Preheating?

As previously stated, preheating your oven is turning on the oven and bringing it up to the required baking temperature. Additional preheating can include placing a baking stone or piece of cast iron cookware in the oven to also heat that tool.

Functionally, what you want to do is capture whatever it is you’re baking in the ambient temperature necessary to start cooking your food immediately.


What will happen if I start cooking my food during the preheat process?

Putting food inside a toaster oven before it has fully heated up can result in poorly cooked food. Here are a few examples of how foods may respond to being cooked too soon:

  • Baking – Baked foods that use yeast, baking soda, and baking powder as leavening agents need precise temperatures to create the chemical reactions needed to create something edible. If you place dough or batter inside a cold or cool oven then there is a good chance that they will rise either too soon or too late. If you’ve ever baked a cake and had it fall then this is probably the reason why.
  • Broiling – Broiling meats in cold ovens will cause them to dry out. Proper broiling sears the outside of the meat, which traps juices inside and keeps it tender and juicy. Broiling in a cold oven will start the cooking process too soon and the meat will cook instead of sear, then eventually cook at a very high temperature, which will dry it out.
  • Roasting – Meats and vegetables that are roasted will get overcooked and/or dried out if cooking begins with preheating.

Your turn

What’s your stance on preheating the oven? Is this something you forget about or is it something you make a point to do? Share in a comment.

Always make a point to turn that dial.


Science Behind Preheating the Oven

Leavening agents are part of the science behind making bread and other baked goods. The substance causes expansion of doughs and batters by the release of different gases.

When proteins and air are put together, they form air bubbles. Mixing both and increasing the air temperature (heat) results in rising bread and can also change the smell or taste.

Preheat Your Oven for Bread

Other than the delicious flavor of nearly any type of hot bread, recipes for baked dough can turn out great with an already hot oven.

Once dough is finished proofing and ready to bake, follow the recipes instructions to preheat your oven. The recipe should tell you how long the bread will need to bake.

Preheating Your Oven for Cookies

If you preheat your oven for baking cookies, expansion can also occur. This is why cookies will get bigger in the oven while you make them.

Cookies also need a preheated oven because of gluten (the stretchy, elastic protein in flour) and how it interacts with other ingredients. If the temperature changes throughout the baking process, parts of a cookie will be get more done than others.

Good-to-know: whipped egg whites can also be used in recipes like sponge cake or angel food cake because it keeps its leavened properties after dried.

Preparing the Oven for Casseroles

Casseroles may be started even in a cool oven if they contain liquid. In fact, most vegetables, meats and casseroles don’t actually need a preheated oven. They can go straight into a cold oven.

Caution: be careful to put a glass casserole dish directly from the fridge or freezer to the oven. Cold glass with a hot oven is not a good combination and can result in cracked bakeware.

Planning in advance and preparing a recipe in a casserole dish ahead of time is a good idea. However, be careful not to get the dish hot quickly by baking it in the oven straight from the freezer.

Tips and Tricks About Preheating the Oven

  • For a quicker preheat, use the broil setting! It will get the oven up to temperature in a matter of minutes.
  • Most modern ovens give a signal or beep when the temperature setting is reached, but you can also use the front window and oven light to check a gas oven thermometer for accuracy.
  • Try not to cook multiple pizzas in the oven, since this can cause overdone crusts on the right and left sides of the oven.
  • Don’t use aluminum foil no matter what others say! It will make your food cook faster and possibly damage your oven.

Other Important Points to Remember

  1. Take an oven thermometer into consideration. The temperature in the oven is sometimes incorrect and does not correspond with the heat of the panel. The real temperature will be indicated by an oven thermometer, which is usually positioned within the oven. Instead of hoping for the signal or for the oven to beep, use a thermometer. Turn the stove on and adjust the temperature when the oven utilizes a pilot light. Before rotating, you may have to click the button gently.
  2. You have to modify the label if the oven is filled with gas marks rather than Fahrenheit or Celsius. You must go online and use a digital device for conversion.
  3. The pilot light sometimes leaves or must be activated before every use. In this case, make sure the temperature dials are ‘off,’ and the pilot light is located easily. Hold a flame by the pilot hole, and light up a match. Take away the match as the pilot light ignites. Turn the temperature up mildly if the pilot light does not ignite.
  4. If you have a digital oven, press the button brown, then set the temperature. To adjust the temperature, make use of the up and down arrows. Hit the ‘Start’ button once the temperature has been established. The digits will change on display. The figure represents the oven temperature inside. Wait until the heat increases, and the actual value is reached.
  5. Place the meals inside the oven when it hits the correct temperature. Gas ovens warm up more quickly than electric ovens so that the suitable temperature of your oven is within 5 to 10 minutes. Keep the gate of the oven closed if otherwise provided in the recipe. Keep your oven’s door closed and look into your food, as the temperature in the oven will drop off, thereby causing a longer cooking time. Do not place too many food meals on the lower rack if you have a bunch to bake and plan on cooking using both shelves. The heat may not reach the food at the upper rack.
  6. If you smell gas, take caution. You can have a gas leak if you smell gas while cooking. Immediately turn the oven off. Avoid using electrical equipment. That can lead to an explosion. Leave the windows open and leave the house. Contact emergency departments by telephone or mobile phone. Never use the mobile phone inside the house.

How long does it take for an oven to preheat to 400°F?

Every oven is different, and the elevation in which you live and the internal temperature of your home is also something to be considered. On average a new state of the art oven should take around 10 or 15 minutes to reach 400°F.

What happens if you’ve had your oven for over 15 years? I’d recommend preheating the oven for a minimum of 20 minutes, but to play it safe, you may want to preheat it for 25 minutes.

Let’s say you decide to not preheat your oven. By putting food in a non-preheated oven, it’s going to first warm your food up to room temperature, before it starts the cooking process. Due to this, your food isn’t going to be properly cooked and some spots will be more thoroughly cooked than others.

There’s also a slight possibility, the food will hit the “danger zone” before cooking and you and your family may get a bout of food poisoning.

How do you preheat an electric oven?

To preheat an electric oven, it is pretty straight-forward. Depending on whether your oven contains a knob or an LCD display, here’s what you need to do.

  • Push in and turn the oven knob to select your temperature, push in and rotate the opposite direction when finished cooking or baking
  • Find the arrows on a digital display to select the temperature, usually in increments of 5 or 10. A long-hold on the button sometimes makes it go faster.

Good-to-know: Electric ovens feature convection fans that heat up the enclosure faster. Gas ovens take longer due to slower air circulation, adding another 5-10 minutes for a pre-heat.

If you do not preheat the oven, you can still cook food starting at a low temperature. Since it is common for any standard oven to heat up within 10 to 15 minutes, some recipes don’t need the extra preheating step, which can make a difference of how long it takes to preheat your oven.

Wrapping Up 

Ovens are a great way to cook your favorite meal. While preheating the oven can be a hassle, knowing how long an oven takes to preheat beforehand can save you time and frustration. While every oven varies depending on factors like age, model, and oven type, the variations are typically within a few minutes. That said, who couldn’t use a few extra minutes to prepare in the kitchen?

Your Are Spending Too Much on Your Electricity 10 appliance hacks to help you save up to $100 per month on your electric bill. By entering your email address you agree to receive emails from Home Appliance Hero. We'll respect your privacy and you can unsubscribe at any time.