
Sheet cakes are a popular choice for events, and they can be cut into slices in a variety of ways. The first step is to determine the size of the cake and the number of people you want to serve. A typical sheet cake is 16 × 24 × 2 inches, but they can also come in half and quarter sizes. Once you know the size of your cake, you can decide on the serving size, which is usually 2 x 2 or 2 x 3 per person. After that, you can score the surface of the cake with a spatula or butter knife to create guidelines for cutting. When you're ready to cut the cake, choose a long, thin knife and wipe it down between each slice. You can also use dental floss or fishing wire to cut the cake.
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What You'll Learn

Scoring the surface
- Use a spatula or butter knife: Gently run a spatula or butter knife across the top of the cake to create your desired slice sizes. Do not press down too hard, as you only want to create a slight indent.
- Create a guide: Determine the size of your cake and the number of people you need to serve. You can then create a guide on the surface of the cake to ensure even slices.
- Work from the outer edge: When scoring, start from the outer edge of the cake and work your way in. This will help you create consistent slices.
- Wipe your knife: Between each score, wipe your knife with a towel to keep your cuts crisp and precise.
- Use a long, thin knife: Choose a knife with a long, thin blade to score the surface. Avoid serrated knives, as they can mess up the frosting.
After scoring the surface, you can use your guidelines to cut individual slices. Start by making a vertical cut, then use your horizontal scores as a guide to cut even slices. Work from the outer edge, pressing the knife in gently at a 45-degree angle until the tip reaches the board. Then, pull the knife towards you to complete the slice.
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Choosing the right knife
First and foremost, opt for a long, thin knife. The length of the knife is crucial because it needs to be able to span the entire width or length of the cake. A thin blade will help you make precise cuts and avoid messing up the frosting. Avoid knives with serrated edges, as they can cause the frosting to become messy and uneven.
Secondly, it is advisable to use a sharp knife. A sharp knife will glide through the cake smoothly, resulting in clean, neat slices. A dull knife may crush the cake or cause the frosting to smudge. If you plan to cut the cake in half to create layers, a sharp serrated knife is recommended for a clean cut.
Additionally, consider the type of metal the knife is made of. Stainless steel knives are durable and rust-resistant, making them a popular choice for baking. Some bakers prefer carbon steel knives for their sharpness and ease of cutting. However, carbon steel requires more care to prevent rusting.
Finally, it is essential to keep your knife clean during the cutting process. Have a towel or paper towel handy to wipe the knife between each slice. This will ensure that your cuts are crisp and that you avoid transferring frosting or crumbs to other parts of the cake.
By following these guidelines and choosing the right knife, you will be well-equipped to slice through your 12-sheet pan cake effortlessly and achieve neat, professional-looking slices.
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Cutting the cake
To cut a 12-sheet pan cake, you'll first want to determine the size of your cake and the number of people you want to serve. A quarter sheet cake, which is 13” x 9 1/2” x 1”, typically yields 20 servings of 2" x 2" or 2" x 3" pieces. Knowing the number of servings you need will help you decide how large to make each slice.
Next, you can score the surface of the cake with a spatula or butter knife to create guidelines for cutting. This step is optional but can help ensure even slices. If you choose to score the cake, only make a slight indent in the top of the cake or frosting.
When you're ready to cut, select a long, thin knife with a smooth blade. Avoid serrated knives, as these can cause the frosting to become messy. Start cutting from the outer edge of the cake, pressing the knife in gently until the tip touches the board. Then, pull the knife towards you to complete the slice. Wipe the knife with a towel between each cut to keep the slices neat and clean.
For even cleaner cuts, you can use unflavoured dental floss or fishing wire. Simply slide the floss or wire under the bottom of the cake slice and pull it away from the rest of the cake before serving.
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Cleaning the knife
To keep your knife clean while slicing through a 12-sheet pan, there are several steps you can take. Firstly, it is recommended to use a long, thin knife with a non-serrated edge to avoid messing up the frosting. Before you start slicing, it is important to wipe down the knife with a dish towel or paper towel to remove any dirt or residue.
After making your first cut, be sure to wipe the knife again before proceeding with the next slice. This will help to maintain clean and crisp cuts. If you are concerned about making even slices, you can score the surface of the cake with a spatula or butter knife beforehand to create guidelines.
It is also suggested to use flavourless dental floss or fishing wire to cut through the cake, which can help achieve clean slices without the need for a knife. However, if you do opt for this method, ensure that the floss or wire is also clean and free of any flavours or residues that could affect the taste of the cake.
Additionally, having a clean, damp cloth nearby is advisable when slicing through a 12-sheet pan. This will allow you to wipe down the knife and remove any cake residue that may accumulate during the slicing process. By following these steps, you can ensure that your knife remains clean and your slices are neat and precise.
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Using dental floss
Dental floss is a great alternative to knives when it comes to slicing through a 12-sheet pan. It is a genius substitution that makes clean slices. Here is a step-by-step guide on how to do it:
First, place the 12-sheet pan on a flat surface. It is important to ensure that the sheet pan is secure and will not slide around during the slicing process. You can use wet paper towels or a rubber mat underneath the pan to prevent slipping.
Next, take a piece of unflavored and unwaxed dental floss and hold it taut between your hands. Position the floss at the point where you want to make the slice. It is recommended to use a long piece of floss, so you have plenty to hold on to and can apply force effectively.
Then, slowly and carefully, begin to saw the dental floss back and forth, applying gentle pressure downward. The dental floss will start to cut through the sheet pan. You can move the floss slightly from side to side to help with the cutting movement and ensure a straight slice.
If you are cutting the sheet pan into layers, you can stick toothpicks into the edges of the pan at the desired height of your layers. Wrap the dental floss around the pan where the toothpicks stick out and pull each end of the floss tightly to cut through the pan. This technique ensures a straight and even slice.
Finally, once you have cut through the sheet pan, carefully lift the top layer or separate the layers to avoid any tearing or crumbling. You can use a spatula or a thin baking sheet to help with this process.
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Frequently asked questions
First, determine the size of your cake and the number of people you want to serve. You can create guidelines on top of the cake using a spatula or butter knife to ensure even slices. Then, use a long, thin knife to cut through the cake, wiping the knife between each slice.
A quarter sheet cake, which is typically 13" x 9.5" x 1", can serve about 20 people with 2" x 2" slices. Adjust your slice sizes and the number of slices accordingly, based on the number of people you plan to serve.
Choose a long, thin knife with a non-serrated edge to avoid messing up the frosting.
Yes, you can use unflavored dental floss or even fishing wire to cut through the cake.
If the edges of your cake are slightly uneven, you can trim them with a sharp serrated knife to create a more even surface before slicing the cake into portions.











































