I need some advice. I am going to be making a sheet cake for someone that needs about 30 servings. I was thinking maybe an 11x15? My biggest concern is that they would like chocolate in the middle, and I'm a little afraid that cutting it in half to fill it would cause it to break. My other idea is that maybe it would be easier to do a one layer 10inch square beside a 5 inch (10 inch cut in half), its just that i've never done that and don't know how easy it would to be to "seam" together. Thank You!
A single layer 9x13 only serves 15-20. A single layer 12x18 will serve 30-50. If you want them filled, work with them cold from the frig, or slighly frozen. After splitting, place a cake board, or cookie sheet to remove the top layer, fill, then slide the top layer on. If if splits a little...that's ok...after you ice it, no one will know the difference. It will all seam back together.
I split them in half all the time and fill. I just split and use a cakeboard to slip between the layers. Lift the top off and set aside. Fill. Then gently replace the top. Dont panic if it cracks a little. It can be patched. I do it so often, they rarely crack for me.
I have piped filling into a sheet cake where the individual pieces would be cut, like filling a cupcake and it worked out fine. Maybe that would be an easier alternative.
In case I wasn't clear I was planning on a single layer (2inch) cut in half.
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