Here’s Why You Should Never Open the Oven Door When You’re Baking Something

Opening the oven door while baking can drop the temperature, causing uneven cooking and deflated baked goods like cakes and cookies. Instead, use the oven light and window to check progress and test doneness with a toothpick in the final minutes. Keeping the door closed ensures perfectly baked desserts.

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By Editorial Team

We’ve all been there—baking something delicious in the oven and succumbing to the temptation to open the door for a quick peek. Whether it’s cakes, cookies, or brownies, it feels almost instinctive to check on their progress. However, this seemingly harmless act can actually jeopardize the baking process, leading to less-than-perfect results.

What Happens to Food If You Open the Oven During the Baking Process?

Opening the oven door during baking can cause a significant drop in oven temperature. This fluctuation affects the oven’s ability to cook food evenly and can extend cooking times unnecessarily. Every time the door is opened, the oven can lose up to 25 degrees Fahrenheit or more, forcing it to work harder to return to the right temperature. This can be particularly detrimental during the initial stages of baking when yeast-leavened products like bread are setting their structure, or proteins in cakes are coagulating to form the desired texture.

Specific Effects on Baked Goods

For delicate items like cakes and cookies, the sudden rush of cool air can cause them to deflate or become dense because the rise that occurs from the expansion of gases inside the batter is interrupted. Similarly, for moisture-sensitive recipes like banana bread and brownies, opening the door can lead to an uneven bake, where the edges might be overcooked by the time the center catches up. This inconsistency can ruin the texture and overall appeal of your desserts.

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How to Check for Doneness Without Opening the Oven Door

So, how do you check for doneness without opening the door? The key is to know your recipe and oven. Most recipes provide a specific baking time range, which should be followed as closely as possible. Use an oven light and view through the oven window instead of opening the door. For an accurate check towards the end of the cooking time, you can quickly open the door and use a toothpick or cake tester. Insert it into the center of the cake or bread; if it comes out clean, your baked good is done. For cookies and brownies, look for the edges to become slightly brown and the center to look set.