Baking a perfect cake is both an art and a science. There’s nothing more disheartening than spending time and effort on a beautiful cake, only to pull it out of the oven and discover that it has sunk in the middle. You know the feeling – the batter rises as it bakes, but when you take it out, a sudden collapse in the center leaves you frustrated and perplexed.
In this article, we’ll dive deep into the reasons behind this common baking dilemma and, more importantly, how to avoid it. With our expert tips, you’ll be on your way to perfect, beautifully risen cakes every time.
Why Does Cake Sink in the Middle?
Before we jump into the tips, let’s first explore why cakes sink in the middle. Understanding the causes behind this problem can help you pinpoint where things went wrong and prevent it from happening again.
1. Overmixing the Batter
One of the most common causes of a sunken cake is overmixing the batter. When you mix the ingredients too much, you incorporate too much air into the batter, which can cause it to rise rapidly in the oven and then collapse as the structure of the cake can’t support the sudden expansion. Additionally, overmixing can also lead to dense or rubbery textures.
Tip: Mix your ingredients just until they’re combined. When you’re folding in flour, be gentle. There’s no need to overdo it!
2. Incorrect Oven Temperature
An oven that’s too hot or not hot enough can cause your cake to collapse. If the oven temperature is too low, the cake will rise slowly, but the structure may not be firm enough to support it. If the oven temperature is too high, the outside of the cake may form a crust too quickly, while the inside is still liquid and undercooked, causing it to sink after removal.
Tip: Always use an oven thermometer to ensure your oven is running at the correct temperature. Preheat your oven thoroughly before putting the cake in.
3. Underbaking
Another cause for a sunken cake is underbaking. If the cake is not baked long enough, the structure won’t be set, leading to a collapse once you take it out of the oven. The middle of the cake, being the last part to set, is the most susceptible to this problem.
Tip: Always check for doneness with a toothpick or cake tester. Insert it into the center of the cake—if it comes out clean, your cake is done!
4. Too Much Leavening
Leavening agents like baking powder, baking soda, and yeast help cakes rise. But if you use too much, your cake will rise rapidly in the oven and then collapse once it cools. This happens because the air bubbles created by the leavening agents expand too much, causing the cake to deflate.

Tip: Be precise with your measurements. Stick to the recipe and never eyeball leavening agents.
5. Opening the Oven Door Too Early
It’s tempting to peek at your cake while it’s baking, but opening the oven door too soon can cause a temperature fluctuation that might make your cake sink. The sudden rush of cooler air disrupts the cake’s rise.
Tip: Avoid opening the oven door until the cake has been baking for at least 3/4 of the recommended time.
6. Wrong Cake Pan Size
Using the wrong size cake pan can affect how your cake bakes. If your pan is too small, the batter will rise too quickly, leading to collapse. If it’s too large, the batter will spread out too thinly, making it difficult for the cake to rise evenly and fully.
Tip: Use the size of pan recommended by the recipe. If you’re improvising, make sure to adjust baking times accordingly.
7. Too Much Liquid
If you add too much liquid to your batter, it can be too runny and not provide enough structure for the cake to rise properly. This can cause the cake to sink in the middle, especially if it’s unable to set before being removed from the oven.
Tip: Stick to the recipe’s suggested liquid measurements. If you’re experimenting with substitutes, ensure you’re making the proper adjustments.
8. Using Cold Ingredients
Baking is all about chemistry, and when you use cold ingredients—such as butter, eggs, or milk—it can mess with the chemical reactions needed for your cake to rise. Cold ingredients can cause the batter to not emulsify properly, leading to a dense, sunken center.
Tip: Always bring your ingredients to room temperature before using them in your cake batter.
9. Incorrect Flour Measurement
Flour is the backbone of most cake recipes, but if you measure it incorrectly, your cake will likely sink. Too little flour and your cake may not have enough structure, while too much flour can make it dry or too dense.
Tip: Use the spoon-and-level method for measuring flour. Gently spoon flour into the measuring cup and level it off with a knife for accuracy.
10. Altitude and Weather Conditions
Baking at high altitudes or in different weather conditions can also affect how your cake rises. The lower air pressure at high altitudes can cause cakes to rise faster and then collapse, while humid weather can make the batter too wet, affecting the final result.
Tip: If you’re baking at high altitude, check specific adjustments for your area. Reducing leavening agents and increasing the baking time may help.

How to Perfect Your Cake Baking
Now that we know what causes cakes to sink in the middle, let’s talk about how to prevent it and ensure you get a beautiful, perfectly baked cake every time.
1. Use Room Temperature Ingredients
When all your ingredients are at room temperature, they’ll mix together more easily, allowing for a smooth batter that’s less likely to sink in the middle. This applies to butter, eggs, and any liquids like milk or buttermilk. Room temperature ingredients help create a consistent batter, which will rise more evenly during baking.
2. Measure Accurately
Baking is all about precision. Make sure you measure your ingredients accurately. Use the correct tools for the job: a kitchen scale for weight and a proper measuring cup for liquids. Incorrect measurements can lead to sunken cakes.
3. Avoid Overmixing
Mixing your batter for too long will incorporate too much air, leading to a cake that rises too quickly and then collapses. Mix just until the ingredients are combined and you’re good to go.
4. Test Your Oven Temperature
Use an oven thermometer to make sure your oven is the right temperature. If your oven is too hot, it can cause the outside of the cake to cook too fast, leaving the inside raw. If it’s too cool, the cake will rise slowly and unevenly, which can also result in sinking.
5. Choose the Right Pan
The shape and size of the pan matter. Make sure you’re using the correct size as recommended in the recipe. The wrong pan can lead to uneven rising, which might cause a sunken center. Use a shiny, light-colored pan to promote even cooking, as dark pans can absorb too much heat and cause burning or undercooking.
6. Bake at the Right Time
Let your cake bake for the full amount of time recommended in the recipe. If you check it too soon, it might not be fully set, leading to sinking. Use a toothpick or cake tester to check for doneness.
7. Don’t Open the Oven Door
Opening the oven door early can cause the temperature inside to drop and disturb the rising process. Only open the door once the cake is almost done to avoid any temperature fluctuations.
8. Cool Properly
Once your cake is baked to perfection, let it cool in the pan for 10–15 minutes. If you try to remove it from the pan too soon, it might collapse. Cooling for just a bit before transferring to a wire rack allows the cake to firm up and set.
Troubleshooting: What to Do If Your Cake Sinks
Even with the best preparation, things can still go wrong. If you find that your cake has sunk, don’t worry—there are ways to troubleshoot.
- If the cake is underbaked, return it to the oven for another 10–15 minutes. Keep an eye on it to avoid overbaking.
- If the cake has a dense texture, it might be from too much flour or overmixing. You can try adding more liquid next time to loosen the batter.
- If you overdid the leavening agents, try cutting them back slightly in the future to prevent rapid rising and collapsing.
Conclusion
Baking is an exciting process that combines creativity with scientific precision. A cake that sinks in the middle can feel like a setback, but now you know exactly why it happens and how to prevent it. By following these expert tips and troubleshooting techniques, you’ll be well on your way to creating flawless cakes that are perfectly risen and baked every time.