The Ultimate Guide On How To Fix Undercooked Brownies

Baking is a work that requires meticulousness and effort; only a small mistake can cause the whole cake to fail.

Through so many times of failure, home chefs will often get discouraged and give up a baking career.

However, today, we will walk you through all things you should know on How to Fix Undercooked Brownies, which is very likely to go wrong in the baking world.

Why Are Your Brownies Not Cooked?

Why Are Your Brownies Not Cooked

1. Leavening Agent Out Of Date

Bakery products are mostly dairy products and usually have a very short shelf life. Using obsolete ingredients such as sour buttermilk is a prevalent mistake when baking. The term “Expiration Date” is often used to refer to the last date the food is safe for consumption. It would be best if you used it before this “expiration date” is best.

For baking, using expired milk or dough will cause the enzymes that make the cake inactive. Besides, the spoiled taste of the ingredients like cocoa powder or melted chocolate will also make your piece of brownies taste unpleasant.

If you are using pasteurized milk sold in supermarkets today, make sure it still has some mucus. In situations where milk is split, and you can see the mold or milk’s color has changed, it’s a pity that you have to throw it away.

2. Wrong Baking Temperature And Timing

Baking is not only an art but also a science; just a little deviation in cooking time will cause a lot of different reactions. In the baking process, the cake is not cooked often because of insufficient time, insufficient temperature, or both of the above reasons.

If you don’t cook enough time, you will see normal bloom at first, but after taking it out of the oven, it will flatten or shrink, and the inside is slightly damp. Another case is that the lack of time and the low temperature will cause the cake’s surface to usually be light yellow and possibly smell the flour or the fishy smell of the egg.

This phenomenon derives from the fact that the convection ovens use a fan to spread heat throughout the chamber, making the dish cooked more evenly and faster. There are heating elements attached to the top and bottom of the oven.

This part is either straight or bent and has the function of creating heat to cook food. These heat bars will generally have a higher heat effect than on the outside, so if you don’t set the right medium heat and baking time, the cake will burn easily outside but still not cook on the inside.

How To Fix Undercooked Brownies?

How To Fix Undercooked Brownies

1. Measure Temperature and Time Regularly

Baking time and temperature are the two factors that determine the ripeness and deliciousness of your brownies. While time is a factor that can be precisely controlled, the temperature can easily fluctuate due to the oven’s quality or outside temperature. Therefore, it is essential to check the temperature of the oven regularly.

The oven thermometer is a simple tool, but it helps you a lot in the baking process. Why is that? Simply because you cannot put your bare hands in the oven to test the ripeness, right?

It will be best to place the thermometer in the oven’s middle groove as soon as it has not started the oven and started to turn on the temperature from low (about 150 degrees). Absolutely do not open the maximum temperature because the oven thermometer needs to adapt slowl.

If the temperature is too high, the oven thermometer may burn. Put the thermometer first and then set the thermostat to know how long it will take the oven to reach the desired temperature.

However, with this approach, bakers can usually only know the oven temp, not the brownies’ internal temperature. Therefore, inserting a dedicated thermometer in the middle of the cake is a much smarter choice. You can check the exact condition of the cake and adjust the baking time accordingly.

2. Put The Brownie Back In The Oven

So, can you rebake undercooked brownies? The answer is definitely yes. This is one of the most common ways that many people have in mind when fixing brownies raw in the middle.

When your brownies are unripe, the filling will usually melt. This is a great time for the oven to be effective. With heat bars that heat from the inside out, your cake will have enough time and heat to cook without burning the surface.

To perform this process, you need to prepare a cake tray made of high heat resistant material that can be used in the oven as a dedicated silicon tray, aluminum, stainless steel, or heat-resistant glass, ceramic, porcelain, and chinaware (without metal rim). It would be best if you place the brownie on the baking sheet before putting it in the oven.

Before you put the cake in the oven, you need to preheat the oven first by plugging in the electric power, setting the appropriate temperature (about 150-1600C) 10 minutes in advance. Since the heat in the oven rises so quickly and gets hot when first started, it is likely to burn the top layer of the brownies if you put them in the first place.

After you put the cake in, the ideal temperature to cook is about 180 degrees C for about 5-7 minutes, depending on how unripe the cake is. You can open the oven and use a dedicated thermometer or the stick of a spoon to check the cake’s crookedness.

A little note is that you should not leave the cake for too long in the oven because this will easily lead to the crust being burnt. Also, keep in mind not to set the oven temp too high just because you want to bake faster. If you do so, the outcome will be overcooked brownies with burnt, black crumbs.

3. Put The Brownie In The Microwave

Microwaves use extremely short electronic wavelengths for cooking foods from the inside out. This method is understood that the water molecules in food under the influence of microwaves will move quickly and generate heat to cook the food. Therefore, using a microwave to cook or reheat fried rice is much faster than other methods.

The decisive factor for the efficient cooking of brownies is that the microwave uses electromagnetic waves and vaporizes water in the core. Thereby, you will get deliciously finished brownies. Furthermore, since microwave cooking is fast and uses very little liquid, it preserves nutrients better than using an oven.

It would be best to set the microwave in rotating mode for even more heat dissipation. The recommended temperature for baking brownies is around 180 degrees in 5 minutes.

When using the microwave for cooking cakes, you absolutely should not use plastic trays because they will easily melt under the high heat impact. The chemicals in household plastic will cause the risk of cancer, very dangerous to humans.

4. Go For A Baking Lesson

Taking a baking class may sound cliché and stereotyped, but this is an important factor to help you achieve beautiful cakes. Any successful bakery chef needs to learn, improve skills, and gain experiences to create beautiful results.

Besides passion, only the bakery industry’s knowledge and skills can help you make the creation of delicious and beautiful cakes. You cannot make a great batch of brownies without knowledge of baking ingredients or how to use those ingredients, right?

These things you can thoroughly equip yourself by taking vocational courses, studying baker’s intermediate school combined with self-exploration from many different sources.

At professional bakeries training schools, you will be provided with comprehensive vocational knowledge, well-instructed in various baking methods and techniques.

Once you have the important background knowledge, you will know how to process the ingredients and combine them harmoniously. At this point, you have become a professional baker, not just a home chef.

Is It Safe To Eat Undercooked Brownies?

The first reason why you should not eat uncooked cakes is that the texture will not be as standard. Baking is an art that requires a very high aesthetic, and certainly, no one wants to serve underbaked brownies with a melting core. Moreover, the dairy-derived ingredients in the cake are easy to fishy, ​​causing discomfort when enjoying.

Secondly, health experts have warned that eating improper baked goods will be harmful to health. Accordingly, when not properly baked, E.Coli bacteria will still multiply in raw flour on the cake. Eggs are also not safe because they contain Salmonella bacteria.

Eating underbaked brownies can cause many serious medical consequences, especially bacterial infections. Diagnosis is difficult because clinical symptoms are not specific.

People who eat the cake may suffer from gastrointestinal diseases such as diarrhea or abdominal pain. Worse, the bacteria will cause intestinal infections that may require long-term hospitalization. Trust me when I say you do not want that!

Therefore, experts’ advice is not to eat unripe cakes and not to eat cakes containing eggs. If baking, wash your hands before and after handling flour. Finally, limit children’s exposure to brownie mix.


Baking is complicated because the ingredients must be manipulated precisely in every small detail, from the quantitative ratio to the mixing method, especially the storage temperature, the baking temperature.

Undercooked cakes can be the result of errors in oven usage, flour mixing, tray usage, handling, and baking times. We hope that you know how to fix undercooked brownies after reading this article. Thank you for reading.

Kevin Richard

Hi all! I’m Kevin. I spend plenty of time in the kitchen every day because I love cooking healthy and delicious foods for my family and friends. Cooking gives me a chance to be creative and fun. It’s also one of the most meaningful ways to express my love and take care of my little family.

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