Can anyone help me with the number of cups of batter that will make a half sheet cake (11x15)? I need a slightly larger cake than the usual 9x13 I normally make, but I am not sure how to change my recipe. Any help would be greatly appreciated.

Thanks,
Debbie

My sheet from my 11x15 says 11 cups of batter. I usually do 13.

FYI: 11x15 is not a half sheet. Half sheet is the 12x18.

Thank you for the clarification. I kept seeing both 11x15 and 12x18 listed as half sheets on a few sites that I searched. Can you clarify how many cups of batter the 18" would take? Also, is there a sure fire way of baking to ensure it bakes evenly?

The amount of batter depends from recipe to recipe. Is it a box mix? doctored mix? scratch?

The recipe is a scratch chocolate recipe. Shouldn't the pans require the same number of cups no matter what kind of recipe you use?

Can you just double or triple any cake recipe for more Batter?

It takes 2 box mixes. I would at least double the scratch recipe and fill pan 2/3 full, bake at 325 for about 35, then check it for doneness. I do that for all of my 11 x 15 cakes. I also use bake even strips pinned together to fit around the pan.

http://www.wilton.com/cakes/making-cakes/baking-wedding-cake-2-inch-pans.cfm