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Sheet Cake Tips

Number of servings guide

Sheet cakes are cakes baked in large, flat pans called sheet pans or jelly roll pans. There are two sizes - commercial and home sizes. Because they are large cakes, they usually require special handling.

SHEET (Jelly Roll) PANS:

Jelly Roll/ Sheet Pan - Home Sizes
10-1/2 x 15 -1/2 x 1
12-1/2 x 17 -1/2 x 1
Jelly Roll/ Sheet Pan - Commercial Sizes
Full sheet pan Standard Bun Pan:26x18x1-inch
or Cake Pans: 24x16x2 or 24x16x3-inches - serves 60 to 96   
Half sheet pan Standard 18x13x1
or 16x12x2 or x3- approx. 12 cups - serves 30 to 48 
Quarter sheet pan Standard 13x9x1 or 12x8x2
or x3; 10-1/2 x 15-1/2x2 or x3- approx. 10 cups - serves 12 to 20

More about pan sizes

I get asked a lot of questions about sheet cakes. Here is a small sampling of questions that are answered on baking911's "Ask Sarah", a Message Board for Bakers
QUESTION: Hi! I need to make a devils food cake approximately 12x17. I purchased a 12x17x3 baking pan; but now I'm stressing out about torting (splitting in half horizontally to frost or fill) such a huge cake. I've done smaller rounds and loafs before; but I'm afraid I might break the layers when I assemble the cake. As I'm torting the cake, I was planning on slipping a thin sturdy foam core board (dusted with cocoa powder to prevent possible sticking) under the cut layer to remove it. CONCERN: I'm afraid the cake layer is going to stick to the board when I transfer it onto the the filling layer. How do you coax the cake off the board without breaking it? Is it okay to freeze each cake layer to prevent this from happening -- it won't do anything weird to the filling? Thanks! Anne

ANSWER: When torting cakes, it is best to use something under the thin layers, like the board you mentioned. The crumbs from the cake keep it from sticking to the board quite well. If this is your first time, slip the layers onto the board and then freeze solid. When you are assembling the cake use them straight from the freezer and they will thaw by the time you have the cake filled and are ready to ice...BUT they are much easier to handle. I have been able to torte and transfer 16-inch round and square wedding cakes as well as full sheet cakes (26x18) with success doing it this way. Take your time and don't rush the process and you'll do great!! Happy Holidays! Tami

Read about another tip

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Question:  Sarah, How many box cakes does it take for a 1/2 (commercial size) sheet cake pan?

Answer: 1/2 commercial size sheet cake holds 12 cups. 1 cake mix makes 4 - 6 cups. The larger the mix size, the more it makes. So, 1/2 sheet pan can hold anywhere from 2 or 3 cake mixes.

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Question: When I make a full sheet cake, the center dips between the two cakes. How can I prevent this from happening? Thank you for your reply.

Answer: Are you baking a full sheet and it's dipping in the center? Or are you using two smaller cakes pushed together for a full sheet? If it's the baking, the cake isn't baking completely. If it's the two cakes pushed together you may have to trim any hump from the sheet cakes and then use a little extra icing in the center to make an even surface.

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Question: I was wondering if you could help with this question. I'm baking an 11 x 15 sheet cake, my first of this size. I was wondering if it is necessary to have a heating core for this cake to bake properly (especially since I don't have one). I've also heard rumors about using nails in place of a heating core. Any tips/advice?

Answer: Some bakers like to use a heating core to help the cake bake in the middle. You can purchase it from a cake decorating store. It distributes heat to bake large cakes evenly. They use it for pans that are 10 inches or larger. Click here to see how it works. Others use an upside-down flower nail set in the middle of the cake and claim it does the same job the heating core does without leaving a cake plug in the middle. The flower nail should go upside down (flat side against the bottom of the pan). Spray the nail lightly with a cooking spray so that it doesn't tear the cake when removed.

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