
Baking a cake in a sheet pan is a convenient way to make a cake, especially if you're short on time. It's a simple method that allows you to bake a flat, evenly baked cake with no doming or cracking, resulting in uniform cake layers. Sheet pan cakes are also great for custom-shaped cakes as they bake into a large rectangle that can be cut into any desired shape. This method is endorsed by pastry chefs like Christina Tosi and Natasha Pickowicz, who prefer using a half-sheet pan for their cakes. When it comes to cake mix, the number of boxes you'll need depends on the size of your pan. For an 18x13x1 inch half-sheet pan, two boxes of cake mix are recommended to achieve a cake with a decent height.
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What You'll Learn

How many cake mixes for an 18x13x1 sheet pan?
Yes, you can bake a cake mix in a sheet pan. A typical half sheet cake takes 14 cups of batter. However, if your pan is only 1" high, you will need approximately 10 cups of batter. A typical cake mix yields 4-6 cups of batter, depending on the brand.
For an 18x13x1 sheet pan, you will need approximately 10 cups of batter. If you are using a 15.25 oz Duncan Hines cake mix, which yields 4-6 cups of batter, you will need 2 boxes. One user reported using 1.5 boxes of cake mix in each of their two 18x13x1 sheets, with the cake rising just over 1/4" above the edge.
It is important to note that the amount of batter needed may vary depending on the brand of cake mix and the desired thickness of the cake. Some users have reported using 2-3 boxes of cake mix in their 18x13x1 sheet pans without specifying the brand or thickness of the cake. Therefore, it is always a good idea to check the box of your cake mix for the recommended pan size and adjust the amount of batter accordingly.
Additionally, when baking a cake in a sheet pan, it is important to ensure that the batter is spread evenly in the pan and that the cake is allowed to cool properly before serving or decorating.
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How to adjust cooking times for an 8x11-inch pan?
Baking a cake in a sheet pan is a great way to make a cake that serves a large number of people. It is also a good option if you want a flatter cake with customizable shapes.
When adjusting the cooking time for an 8x11-inch pan, there are a few key factors to consider:
The amount of batter
The amount of batter you use will depend on the size of your pan and the desired thickness of your cake. A typical half sheet pan takes 14 cups of batter, but if your pan is only 1 inch high, you will need about 10 cups of batter. A typical cake mix yields 4-6 cups of batter, so you may need to adjust the amount of batter you use or use multiple mixes.
The depth of the batter
The depth of the batter in the pan will affect the baking time. If you are using a larger pan, the same amount of batter will be shallower and may cook faster. Conversely, if you are using a smaller pan, the batter will be deeper and will likely need more time to bake.
The type of pan
The type of pan you use can also impact the baking time. Dark metal pans cook the outsides of the cake faster than shiny metal pans. If you are using a dark metal pan, you may need to lower the oven temperature by 25°F to prevent the cake from overcooking.
Checking for doneness
It is important to start checking the cake for doneness before the recommended baking time has elapsed, especially if you are using a thinner layer of batter or a different type of pan. Insert a toothpick into the centre of the cake to check if it is cooked through – if the toothpick comes out clean, the cake is done.
Adjusting the temperature
If you are using a smaller pan or a deeper layer of batter, you may need to lower the oven temperature to prevent the cake from overcooking. Conversely, if you are using a larger pan or a shallower layer of batter, you may need to increase the temperature slightly.
The original baking time
The original baking time for the cake recipe will also factor into the adjustments you make. As a general rule, the more surface area your pan has, the faster the cake will bake. So, if your 8x11-inch pan has more surface area than the original pan size, you may need to reduce the baking time.
In summary, when adjusting the cooking time for an 8x11-inch pan, consider the amount of batter, the depth of the batter, the type of pan, checking for doneness, adjusting the temperature, and the original baking time. By taking these factors into account, you can ensure that your cake bakes evenly and is cooked through.
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How to decorate a sheet cake?
Yes, you can bake a cake mix in a sheet pan. Sheet cakes are easy to transport and serve, making them a popular choice for gatherings and parties. Here is a guide on how to decorate a sheet cake:
Planning and Preparation
Before you begin decorating your sheet cake, it is important to plan and prepare. Decide on a design or theme for your cake, considering the occasion and your audience. If you're making a sheet cake for a birthday, you might want to include colourful sprinkles or a personalised message. For a more elegant or sophisticated event, you could opt for a minimalist design with fresh flowers or elegant piping.
Baking the Cake
The first step in decorating a sheet cake is to ensure that your cake is baked evenly and has a smooth, level surface. To achieve this, spread the batter evenly in the pan using an offset spatula before baking. Allow the cake to cool completely before decorating.
Icing and Frosting
The most common way to decorate a sheet cake is by using icing or frosting. You can make your own frosting by heating butter and milk in a saucepan over medium heat, stirring until the butter melts. Remove from the heat and slowly whisk this mixture into a bowl of powdered sugar until well combined. You can add extracts like almond or vanilla for flavour. Spread the icing evenly over the cake with a spatula, allowing it to drip down the sides.
Adding Details
Once your icing has been applied, you can add further details to your cake. This could include sprinkles, fresh or dried fruits, nuts, or edible glitter. You can also pipe additional buttercream or royal icing designs onto the cake, such as flowers, leaves, or personalised messages.
Assembling Layers
If you have baked multiple layers for your sheet cake, you will need to assemble them carefully. Place the bottom layer on a serving plate or cake stand and spread a layer of frosting or whipped cream on top. Stack the next layer on top and repeat until all layers are assembled. Trim the edges of the cake for a neater appearance, then slice into squares or rectangles to serve.
Creative Techniques
There are several creative techniques you can use to decorate a sheet cake:
- Use cake scraps: Crumble leftover cake scraps and mix them with rum to create truffle-like decorations. Alternatively, dry out the scraps and blitz them to create crumbs, which can be used as a garnish or to line the base of fruit pies.
- Design transfer: Trace a design onto parchment paper, then place it design-side down on the cake while it's still hot. Peel off the paper to reveal your design.
- Naked cakes: Opt for a minimalist approach by simply dusting the cake with icing sugar or cocoa powder, or leaving it bare and garnishing with fresh flowers or fruit.
With these tips and techniques, you'll be able to create a beautifully decorated sheet cake that's sure to impress!
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How to ensure the cake cooks evenly?
To ensure your cake cooks evenly, there are several steps you can take. Firstly, prepare your sheet pan by greasing it and lining it with parchment paper. This will help the cake cook evenly and also make it easier to remove once it's baked. Next, spread the batter evenly in the pan using an offset spatula or a similar tool. This step is crucial, as it helps achieve a level surface, preventing uneven baking and overcooked edges.
Additionally, keep in mind that sheet pan cakes tend to bake more quickly and evenly than those in round pans due to their thinner layers. As such, it's important to keep a close eye on your cake and start checking for doneness at least 10 minutes before the bake time listed in the recipe. You'll know your cake is done when it springs back lightly when touched, and you'll also start to smell its aroma.
Finally, allow your cake to cool properly. This is essential to ensure the cake firms up but remains moist, making it easier to remove from the pan without crumbling. Following these steps will help you achieve an evenly baked cake with a beautiful, level surface.
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What are the benefits of baking a layer cake in a sheet pan?
Baking a layer cake in a sheet pan has several advantages. Firstly, it ensures a flat and even bake, eliminating unpredictable doming or cracking, which allows for more uniform cake layers. Sheet pans are also shorter than round pans, resulting in thinner layers that don't need to be split imprecisely for filling. This simplifies the process and saves time.
Another benefit is the versatility of a sheet pan. You can cut the cake into any shape or size you desire, making it ideal for custom-shaped cakes. You can create a wedding-cake-style tower of tapering layers or a tall and narrow layer cake. Sheet pans are also useful when you need to bake multiple layers in one go, as you only need to rotate a single pan during baking.
Sheet pans are also a great option when you're short on time or need to make a large number of servings. They typically yield more servings than traditional round cake pans, making them perfect for feeding a crowd. Additionally, the large surface area of a sheet pan allows for faster cooling times, which can be beneficial when you're in a hurry.
Baking a layer cake in a sheet pan can also result in some extra scraps that can be used for decorating or snacking. These scraps can be cut into various shapes and sizes, providing a fun and creative element to your cake-decorating process. Overall, baking a layer cake in a sheet pan offers convenience, versatility, and efficiency, making it a great option for bakers of all skill levels.
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Frequently asked questions
Yes, you can bake a cake mix in a sheet pan.
Sheet pan cakes bake flat and even, with no unpredictable doming or cracking, allowing for more uniform cake layers. Sheet pans are also less tall than round pans, reducing baking and cooling time.
This depends on the size of your sheet pan. A typical half sheet pan takes 14 cups of batter, so if your pan is 1" high, you will need 10 cups of batter, which means two boxes of cake mix. If your pan is 18"x13"x1", you can use 1.5 boxes of cake mix.
The baking time depends on the size of your pan. A larger and deeper pan will take longer to bake. For a shallow pan, check for doneness early and often, as it may bake in as little as 15 minutes.
Sheet cakes are versatile and can be cut into any shape or size you want. You can use a parchment round as a guide to cut out perfect circles for layer cakes, or you can cut the cake into rectangles or squares.











































