
Baking a batch of brownies is a fun and easy activity, and it's even better when you have the perfect recipe for your pan size. If you're looking to make a larger batch of brownies using an 8x8 pan, you might be wondering how to adjust your recipe accordingly. In this discussion, we will explore the best approaches to doubling a brownie recipe for an 8x8 pan, ensuring a delicious and successful outcome. Whether you're baking for a crowd or simply want to indulge in extra fudgy treats, stay tuned for some sweet insights!
| Characteristics | Values |
|---|---|
| Oven temperature | 350 degrees |
| Pan type | 8x8 |
| Butter type | Unsalted |
| Cocoa powder type | Unsweetened |
| Number of eggs | 3 |
| Additional ingredients | Walnuts, pecans, chocolate chips or chunks |
| Baking time | 30-40 minutes |
| Baking time adjustments | Add 1-2 minutes if brownies are not baked after initial time |
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What You'll Learn

Use a 9x13 pan and double the ingredients
To double a brownie recipe for an 8x8 pan, you can use a 9x13 pan and double the ingredients. This will yield a slightly thicker brownie, with a difference in height of about 0.09 inches, which will be almost invisible to the casual observer.
The baking time will also increase slightly, but doubling the recipe is much easier than increasing each ingredient measurement by 1.85 times, which is the exact ratio of ingredient increase when converting from an 8x8 to a 9x13 pan.
To make brownies in a 9x13 pan, you can follow these general steps:
- Preheat your oven to 350 degrees Fahrenheit.
- Grease your 9x13 pan and set it aside.
- Melt the required amount of butter, either on the stovetop or in the microwave.
- Whisk cocoa powder into the melted butter and set it aside to cool.
- Add the remaining ingredients, such as eggs, vanilla extract, and any additional mix-ins like chocolate chips or nuts.
- Mix the ingredients with a hand mixer, scraping the sides occasionally to ensure even mixing.
- Pour the batter into the greased pan and smooth it with a spatula.
- Bake for around 35-40 minutes, or until a toothpick inserted into the center comes out clean. The baking time may vary slightly depending on your oven, so keep an eye on the brownies to avoid overcooking.
- Remove the brownies from the oven and allow them to cool completely before cutting and serving.
Remember that the exact ingredients and measurements may vary depending on the specific brownie recipe you are using. Always refer to your recipe for the best results.
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Bake for 35-40 minutes, checking after 30
Baking times do not scale linearly with the amount of batter, so it is important to rely on other cues to determine when your brownies are done. You should bake your brownies for 35-40 minutes, checking after 30 minutes or so. The brownies are done when a toothpick inserted into the centre comes out clean, or when the edges are dry and browned. You can also check if they are done by gently pressing down on the top of the brownies with your finger. If it springs back, they are ready to be taken out of the oven. If there is a dent, they need a little longer.
It is important to keep an eye and nose on the brownies as they bake. If you are baking at a higher altitude, the brownies may take less time to bake. If you are using a glass pan, the baking time may also be affected.
If the brownies are not yet baked after 35-40 minutes, add 1-2 minutes to the baking time and check again.
Let the brownies cool completely before cutting and serving. This will help them firm up and make them easier to cut into clean slices.
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Don't double the cooking time
When doubling a brownie recipe for an 8x8 pan, it is important to note that the cooking time does not need to be doubled as well. Doubling the recipe will result in a thicker batch of brownies, but the cooking time only needs to be slightly adjusted.
The original 8x8 brownie recipe with a cooking time of 30 to 35 minutes can be doubled for the same pan size, and the cooking time will only need to be increased by a few minutes. This is because the batter will be thicker and may take a little longer to cook through, but the overall cooking time remains relatively similar.
It is important to keep an eye on the brownies towards the end of the original cooking time and check them every 2 to 3 minutes to ensure they do not overbake. Overbaking brownies can result in a dry and crumbly texture, which is undesirable.
Additionally, if using a glass pan, it is recommended to lower the oven temperature by 25°F as glass retains more heat than metal pans. This adjustment will help prevent overbaking and ensure the brownies remain moist and fudgy.
By doubling the recipe and making slight adjustments to the cooking time and oven temperature, you can successfully bake a thicker batch of brownies in an 8x8 pan without needing to double the original cooking time.
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Use unsalted butter and high-quality cocoa powder
When doubling a brownie recipe for an 8 x 8 pan, it is important to use unsalted butter and high-quality cocoa powder. Using unsalted butter allows you to control the salt content in the batter. Salted butter can be used in brownie recipes, and some bakers even prefer the taste of brownies made with salted butter. However, using unsalted butter gives you more control over the final product.
High-quality cocoa powder is also important when making brownies. Compared to brownies made with just chocolate or a combination of chocolate and cocoa powder, brownies made with cocoa powder have a superior texture and flavour. Cocoa brownies stay softer than chocolate brownies and don't become dry or crumbly. This is because cocoa powder contains very little cocoa butter, which is firmer than butter at room temperature, so additional butter must be added to the recipe to compensate.
Cocoa powder is also the key to achieving an intense chocolate flavour. Cocoa powder is 100% cocoa, while chocolate bars contain sugar, additional fat, vanilla, and sometimes emulsifiers and stabilizers. The flavour of brownies made with cocoa powder is therefore more consistent and less likely to be altered by additional ingredients.
When selecting a cocoa powder for your brownies, it is important to choose a high-quality, unsweetened variety. Natural cocoa powders such as Hershey's, Ghirardelli, and Scharffen Berger are commonly used and recommended. Dutch-processed cocoa powders can also be used, but they may make the brownies too bitter, especially if you are adding chocolate chips or other sweet additions.
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Add chocolate chips or nuts, if desired
If you're making brownies in an 8x8 pan, you can add chocolate chips or nuts to the batter if desired. The amount of chocolate chips or nuts you add will depend on how chocolatey or nutty you want your brownies to be. For instance, you can add about half a cup of chocolate chips to the batter and top it with another half cup. You can also add about half a cup of walnuts or pecans to the batter.
If you want to make your brownies extra gooey and chocolatey, you can add some chocolate chips or chunks to the batter, and top them with extra chocolate chips before baking. This will give them a rich, chocolatey flavour and a gooey texture. You can also add chopped nuts to the batter, such as walnuts or pecans, for a nutty flavour.
If you're using chocolate chips, it's important to note that the brownie batter needs to be thick enough to prevent the chocolate chips from sinking to the bottom of the pan. You can also melt some chocolate chips with butter to create the brownie batter, which will give your brownies a fudgy texture.
When doubling a brownie recipe for an 8x8 pan, it's important to consider the cooking time. Doubling the recipe will result in a slightly thicker brownie, so you may need to increase the cooking time accordingly. However, doubling the recipe may not always require doubling the cooking time as well.
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Frequently asked questions
To double a brownie recipe for an 8x8 pan, simply double all the ingredients. The area of a 9x13 pan is roughly twice that of an 8x8 pan, so you can use this larger pan to bake your doubled recipe.
Yes, doubling the recipe will increase the baking time, but it will not be doubled. Check your brownies after 30-35 minutes and then every 1-2 minutes until they are done.
Preheat your oven to 350 degrees Fahrenheit.
Yes, you can add chocolate chips or chunks (about 1/2 a cup), or 1/2 a cup of walnuts or pecans.











































