
A 9x13 cake pan can yield 18 to 30 servings, depending on how big the pieces are cut. If you want to cut a 9x13 pan into 20 pieces, you can try dividing it evenly into four pieces on the short side and five on the long side. You can also use a bench scraper to ensure straight and even cuts. Additionally, it's important to remember that cakes typically shrink after baking, so a 9x13 pan will likely result in a cake that is closer to 8x12 inches before icing.
| Characteristics | Values |
|---|---|
| Number of slices | 18-30, depending on slice size |
| Slice size | 2"x2"x2" (single layer) or 1"x2"x4" (double layer) |
| Number of layers | 1 or 2 |
| Number of mixes required | 1 1/2 |
| Size after baking and before icing | 8x12 |
| Number of slices according to Wilton | 45 |
| Method of cutting | Cut into four pieces on the short side and six on the long side |
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What You'll Learn

Cut into four pieces on the short side
To cut a 9x13 pan into 20 pieces, you'll first want to cut the short side into four equal pieces. To do this, follow these steps:
- Start with the short side of the pan facing towards you.
- Measure the middle point of the short side and cut away from you.
- Find the halfway point between the edge and the middle cut, and cut all the way down.
- Repeat this process on the other side of the middle cut.
Now you should have four columns that you can cut into five equal pieces each to reach a total of 20 pieces. You can use a ruler or measuring tape to ensure your cuts are precise and that each piece is the same size.
Alternatively, you can cut the short side into four pieces and the long side into six pieces, resulting in a total of 24 pieces. This will give you slightly smaller pieces, but it may be easier to divide the pan evenly this way.
It's important to note that cakes typically shrink after baking, so a 9x13 pan will yield a cake that is approximately 8x12 inches before icing. Therefore, the pieces may be smaller than expected, and you may need to adjust your cutting strategy accordingly.
Additionally, if you are baking a sheet cake, a simple formula for figuring out the number of servings is to divide the long side by two and then multiply by the short side. So, for a single-layer 9x13 cake, you would get 6 (half of 13) x 4 (half of 9), or 24 servings.
By following these steps and formulas, you can ensure that your 9x13 pan is cut into 20 evenly sized pieces.
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Cut six pieces on the long side
To cut a 9x13 pan into 20 pieces, you'll need to cut six pieces on the long side. Here's a step-by-step guide for this process:
First, it's important to allow your cake to cool completely before attempting to cut it. This will help ensure that it holds its shape and doesn't crumble or break during the cutting process.
Once your cake has cooled, you can begin cutting. For the long side, you'll want to make six cuts. Start by measuring the length of the long side, which is 13 inches. Divide this length by 6 to determine the approximate width of each piece, which will be just over 2 inches (approximately 2.16 inches).
Now, starting from one edge, make a mark at your desired width (2.16 inches or a similar measurement). You can use a ruler or a measuring tape to ensure accuracy. Make a second mark at the same distance from the first, and continue making marks along the length of the cake. You should end up with six evenly spaced marks.
Using a sharp knife or a bench scraper, carefully cut through the cake along the marks you've made. Cut in a straight line, pressing the knife or scraper straight down and pulling it straight out, rather than using a sawing motion. This will help ensure straight and even cuts.
Repeat this process on the other long side of the cake, making six more cuts. Now you should have twelve pieces, with six cuts along each long side.
By following these steps, you'll have successfully cut six pieces on the long side of your 9x13 pan, bringing you closer to your goal of dividing the cake into 20 pieces. Remember to clean your knife or scraper between cuts to ensure neat and precise slices.
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Make 20 equal-sized pieces
To cut a 9x13 pan into 20 equal-sized pieces, you will need to follow a few simple steps. First, it is important to note that cakes tend to shrink after baking, so a 9x13 pan will typically yield a cake that is closer to 8x12 before icing. This means that the number of servings you can get from a 9x13 pan will depend on how big you cut the pieces.
A good rule of thumb for cutting equal-sized pieces is to treat the cake as if it were a square, regardless of its shape. Start by dividing the cake into four equal pieces on the short side and five equal pieces on the long side. This will give you 20 pieces that are roughly the same size.
Another method is to cut the cake into five equal columns and four equal rows, resulting in 20 equally-sized pieces. You can use a piece of wax paper to help guide your cuts and ensure that the pieces are as equal as possible.
It is worth noting that if you are selling or pricing the cake, it is common to follow a standard serving size of 2"x2"x2" for a single layer cake or 1"x2"x4" for a double layer cake. Using these standard serving sizes, you may get closer to 18-30 servings from a 9x13 pan, depending on how efficiently you cut the cake and whether you include the corner pieces.
Finally, remember that the number of servings can also be influenced by the thickness of the cake layers. A two-layer cake will yield more servings than a single-layer cake, as the pieces can be cut smaller since the cake is twice as tall.
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Cut the cake into layers
To cut a 9x13 cake into layers, you will first need to turn the cake out of the pan, but make sure to leave the parchment paper attached. Use a sharp serrated knife to cut the cake cleanly in half to create two rectangular layers. A standard baking sheet/half-sheet pan is about 13 x 18 inches, so cutting it in half will give you two 13 x 9-inch layers.
If you want to create four layers, you can cut the cake in half vertically and horizontally. However, this can be a bit tricky if the edges are more done than the middle, as it can result in inconsistencies in the texture across the layers. It is also important to level the cake layers, especially if you are using a single pan instead of two.
Another option is to use a piece of parchment paper as a guide to cut out your layers. You can use a default 8" or 9" round, or cut it smaller, or go for a rectangular or square shape. This method can leave you with some leftover cake scraps, but these can be pressed into a cake ring to act as the bottom layer.
Remember that the type of cake you are using matters. Really dense cakes, like pound cake, can be difficult to stack due to their weight. On the other hand, overly delicate cakes or very thin layers can be challenging to cut and layer in one piece.
Additionally, if you are using a recipe that yields two 8" or 9" cakes, you may need to increase the recipe by 1.5 to account for the larger pan size. Grease the half-sheet pan and line it with parchment paper. Pour in the batter and spread it evenly with an offset spatula. After baking and cooling, use a piece of parchment in the desired shape of your cake layers to trace out the layers with a sharp knife.
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Adjust the number of pieces depending on the number of layers
When cutting a 9x13 pan into pieces, the number of pieces you can get will depend on the size of each piece. For example, a 9x13 pan can yield 18 to 30 servings depending on how big each piece is cut. If you're aiming for 20 pieces, you can adjust the size of each piece accordingly.
If you're working with a single layer cake, a standard serving size is considered to be 2"x2"x2". Using this as a guide, you can cut your 9x13 pan into 20 pieces by making each piece approximately 1.8"x2"x2". This will give you a slightly smaller serving size than the standard, but it will allow you to get 20 pieces from your pan.
However, if you're working with a double layer cake, the standard serving size is typically considered to be 1"x2"x4". In this case, you can cut your 9x13 pan into 20 pieces by making each piece approximately 1"x1.8"x4". Again, this will give you a slightly smaller serving size than the standard, but it will allow you to achieve your desired number of pieces.
It's important to remember that cakes typically shrink after baking, so a 9x13 pan will likely give you a cake that is closer to 8x12 before icing. This should be taken into account when determining your piece size and the number of pieces you can get from your pan.
Additionally, if you're looking for clean and precise cuts, consider using a bench scraper. This tool will give you more control over your cuts than a standard kitchen knife, resulting in neater and more even pieces.
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Frequently asked questions
You can get 18-30 slices from a 9x13 pan, depending on how big you cut the pieces.
The average serving size for a single-layer cake is 2"x2"x2", and for a double-layer cake, it's 1"x2"x4". You can treat all cake shapes as if they were square when cutting.
You can cut your 9x13 cake into 20 slices, but the pieces may be quite small. The Wilton website has a chart that can help you determine the number of servings based on the size of the pan and the desired slice size.
Yes, first, allow your cake to cool completely before cutting. Then, divide the cake evenly into four pieces on the short side and six on the long side. You can make the centre slices a bit smaller and the outer ones a bit larger, as the corners tend to be rounded.
A serrated knife is recommended for cutting cakes as it will produce fewer crumbs and give you more control over the size and shape of your slices.










































