How To Preheat Your Oven Correctly

Before you throw your favorite baked dish in the oven, its important to preheat your oven correctly.

In this article you will learn how long to preheat your oven and ensuring you dont loose too much heat while opening the door.

The Working Of An Oven

The ovens functioning is tricky because they arent exact appliances; instead, they work on averages and approximations.

Your oven has a tolerance zone for your preferred temperature.

When the ovens internal temperature reaches the lower point, the heating element kicks on till the temperature gets to the upper level.

Once on the upper level, the heating element switches off, thus forcing temperature oscillation back and forth to attain an average temperature.

It is vital to note that different ovens set to the same temperatures may have internal temperatures varying by as much as 900F.

Testing The Accuracy Of Your Oven Temperature

An undercooked meal doesnt always mean a faulty oven, but its a cause for concern.

To eliminate the stove, you can test the ovens accuracy with a good quality thermometer. 


  1. On the middle rack, hang the oven thermometer in the center and set the ovens temperature to 350˚F.
  2. Let the oven preheat for 20 minutes and check the temperature reading to know if its moving toward the designated temperature.
  3. You can also check the temperature every 20 minutes for an hour or two to determine if the oven is well-calibrated and maintaining its temperature.
  4. Add the readings taken and divide by the number of times you recorded to get the average of the actual set temperature.

Troubleshooting The Problem

If the average temperature is inaccurate, then establishing the precise cause of the issue can be time-consuming.

Most times, the temperature dial needs adjustment to match the ovens internal temperature.


  1. Start by ensuring the internal thermostat sensor inside the oven is safe and not in contact with the interior walls.
  2. Place the thermometer in a central position of the middle rack. Set the preheating temperature at 350˚F or 176.67˚C and allow the oven to heat up for 20 minutes before recording the first reading.
  3. Take a reading after every 20 minutes and calculate the average reading for the next hour and a half.
  4. Take the plastic knob off the temperature dial.
  5. Mark the alignment flat spot using a marker so you can always go back in case of any fault.
  6. Loosen the screws attaching the outer dial and the inside mechanism with a screwdriver.
  7. You can also examine the adjustments by recording the ovens average temperature by repeating the steps above.
  8. You can now find the difference between the set temperature and the calculated average. If the oven isnt displaying the correct temperature, grasp the stem and rotate the dial clockwise.
  9. Finalize by tightening the screws and reconnecting the knob to the dial back to the oven.

If the oven still has issues, it could be a problem of a defective thermostat sensor, heating element, or any other component requiring replacement, and you can consider indulging a professional.

How Do I Know When My Oven Is Preheated?

When you dont preheat your oven to the correct temperatures, the chances are that your food wont cook properly.

Undercooked food is a common problem, especially when dealing with baked goods.

Sometimes even the recommended preheating period may not always work.

As with the regular use of the oven over the years, the internal components wear out and lose time accuracy.

The damage is due to heating and cooling, which places the elements under a lot of stress.

Therefore, you must learn to check if your oven has reached the desired temperature and how to troubleshoot any issues.

This article provides you with a quick test to check if your oven is well preheated.

How Long To Preheat Oven

Preheating the oven should be at an appropriate temperature

Preheating the oven should be at an appropriate temperature to ensure effectiveness in preparing a particular meal. If the stove is too cold, it may alter your food in the following ways;

  • The color of the crust
  • Dryness
  • The food may be heavy and dense
  • A coarse or gritty texture

If the oven is too hot, it can have the following effects on the food;

  • Cracking
  • Burnt food
  • An undercooked meal.

The average time needed to preheat an oven to a temperature of 350° is about 15 min, and to 450°, it takes 20 minutes, though the time varies depending on the stove.

The older model ovens may have a longer preheating time compared to modern models.

The sure way to know how long preheating takes is by timing with an oven thermometer.

Place the thermometer in the middle rack at the center and check the temperature between 10-20 minutes to see if its attained the desired temperature.

What Do You Do After You Preheat The Oven?

Preheating the oven is always the first step of food preparation. The next question is what happens after the preheating process.

With the oven preheated, you are now ready to start your food preparation process.

  1. Place whatever you want to cook or bake inside the oven.
  2. Set a preferred temperature depending on the meal you are prepping.
  3. Set the timer for the amount of time your specific food requires to get ready.
  4. Press start, which gets your oven in bake mode.

Essential Tips To Know When Using The Oven After Preheating 

  • Refrain from opening the oven door till the meal you are preparing is ready and done. Every time you open the door, the temperature goes down and throws the timing behind by 5-10 minutes. In some cases, it may even ruin the dish.
  • Ensure you go through your recipe during food preparation and note the special instructions that come with specific meals.
  • The temperature should be adequate to brown the foods and not burn them outside and leave them raw on the inside.

How Can I Preheat The Oven Faster?

Preheating the oven can be challenging and time-consuming, especially when trying to have your dinner on the table quickly.

It can be because something came up unexpectedly or you were late to start your cooking for whatever reason.

Even though you are working against time, you do not want to have an unpresentable meal on the table or a ruined recipe.

Such situations may prompt you to use the oven before it has attained the required temperature or forego the entire recipe altogether.

You dont have to resort to either of the choices; remember, the 15 minutes preheating time could make a difference in your meal.

This article has a quick kitchen hack for you if you find yourself in this situation.

The trick is in the broiler.

If you put your ovens broiler at high temperature for 3-5 minutes, youll discover that your stove can attain high temperatures almost instantly when you set the appliance to the required temperature after. 

With this shortcut, you wont have to keep tapping on your oven door to check the temperatures impatiently.

How To Know When The Oven Is Done Preheating

Preheating is a vital part of using the oven. If the oven is too hot or cold, the baked foods may be crumby, burnt, flat, gooey in the center, or overly dense.

Most modern ovens have built-in indicators to give you a signal when the stove is at the correct temperature, though fluctuations are a common occurrence.

An oven thermometer will provide you with a definite assurance of the internal temperature of the oven.

Visual Indicators 

Even though ovens differ, a few indicators are prevalent in establishing that your oven is hot enough and ready to get the job done.

You can check for the static symbols on the control panel and LCD screen.

Modern makes may have the screen displaying the words Preheating or an abbreviation as PRE during the process.

When the visual indicators vanish, it signifies that preheating is complete and the oven is ready for baking.

Other oven makes use lights as a sign of preheating known as the indicator light.

Depending on your oven model, the indicator lights may shut off after preheating or turn on when the oven is at the correct temperature.

Other ovens have animated symbols and timers on the LCD screen to help you keep track of the preheating cycle.

Some displays show a sequence of lights that turn on in ascending order as the temperature rises.

Some also display the temperature rise in degrees Fahrenheit or Celsius as the temperature rises to the set temperature.

Audio Clues

Another helpful feature is the sound from the oven. With modern ovens, you can listen for tons or bleeps before, during, or after the preheating to monitor the progress.

Most modern gas ovens have push-button pads or electronic controls, with the short beeps are after pressing the buttons to begin the preheating cycle while the long tones indicate the end of the process.

You can also lookout for the sound of the internal fans in a gas oven if it has one.

The fans may turn on when the sensors realize the oven cavity has attained the required temperature. For the older models, you may hear the sound of the gas shutting off after achieving the preferred temperature.

Oven Thermometers

Oven thermometers are a special kind. They can withstand the ovens high heat while at the same time detecting the precise temperature.

You can use a freestanding thermometer or one that hangs on the rack to determine the precision of the ovens temperature controls.

To get the most accurate findings, you can peep through the glass door instead of opening it because it may result in a significant temperature drop.

Keep a close watch on the thermometer during preheating to track the progress.

When the other indicators show that the thermometer has attained its required temperature, compare with the readings of the oven thermometer to see if there is a similarity.

What Happens If You Don’t Preheat Your Oven?

If you place the dough in a cold oven, chances are it will not rise as expected

It is probably clear that preheating your oven is an essential step.

Nonetheless, you may wonder why do I need to preheat? Or whats the worst that can happen if I dont preheat my oven before cooking.

Every reliable recipe will provide you with a step to preheat the oven before the actual food preparation.

The average time taken by the stove to heat to the correct temperature is about 20 minutes. You can wait for an extra 10 minutes to allow the oven to settle into this temperature before you can start baking to prevent dealing with fluctuations.

What Happens If You Dont Preheat? 

Sometimes you may accidentally forget the preheating process, or you are in a rush to wait for the oven to attain the right temperature, or maybe you are too hungry to wait.

You decide to pop in a quick meal inside your stove, and it turns out just fine, and now you wonder what the need for preheating is.

Some meals are not affected by a cold oven though other foods rely on that direct heat resulting from preheating.

For instance, the temperature is essential in the chemical reaction involving a dough with a leavening agent like baking powder.

If you place the dough in a cold oven, chances are it will not rise as expected. The same applies to preparing yeast bread; you need a preheated oven.

Placing these foods in a cold oven would make the final product dry, crumbly, and dense.

Egg dishes, meringues, and soufflés also require a preheated oven, lest it will go flat even before cooking.

Also, remember not to open the door midway before the cooking process is complete so that it inevitably sinks the meal.

As stated, a preheated oven doesnt make a difference in preparing some of the foods; neither does it impact a good quality outcome of the food.

The majority of meats, casseroles, and vegetables do not need a preheated oven.

In a nutshell, recipes with a long and slow cooking time like roasting dont need a preheated oven, but those with a fast cooking time and require a high temperature need a preheated oven.

For example, pizza recipes require a high temperature of 400 degrees and a short cooking time to give a nice crisp crust.

It is, therefore, possible to get away with not preheating your oven depending on the meal you are prepping.


The most critical aspect is understanding the make and type of stove and the recipe you are prepping to get the ultimate results.