Bakeries and grocery stores generally sell half sheet cakes for special orders. Some places will even have pre-made cakes ready to purchase that you can add text to. Before you order a half sheet cake, you should know what size it is so you can make sure you have enough cake.
A half sheet cake is a large rectangular cake that is commonly served for large gatherings of people. It can either be a single or double layer of cake. A double layer cake is a great way to get more servings out of your cake.
Though round cakes can be great for small gatherings, half sheet cakes are often a better choice for when you have a larger group of people. With a half sheet cake, it is much easier to cut equal slices of cakes thanks to its large rectangular size. The slices will also be neater and easier to serve.
A half sheet cake size can vary depending on where you get it from. When you get a half sheet cake from a bakery, it is generally either 15 inches by 11 inches, 15 1/2 inches by 10 1/2 inches or even as big as 16 inches by 12 inches.
If you are having a get together with anywhere from 18 to 40 people, a half sheet cake is a perfect size. Measuring approximately 15 inches by 11 inches, this size cake is perfect for birthday parties, graduations, and baby showers.