12 x 18 x 2 pan 325 for 40 minutes at least. Start checking at 40 minutes and add until “its done.” I don’t use cake mixes so mine might be a little longer to bake.Click to see full answer. Herein, how long do I bake a 12x18x2 cake?For a half sheet cake pan (12X18X2), you’l need to double a recipe that calls for a 9X13 cake. Bake the cake at 350F for 40-47 minutes. If, at 25 minutes, you find the edges are beginning to brown, tent them with foil.Also, how many boxes of cake do I need for a 12×18 pan? Hi Kbeebe13, We recommend filling the pan about 2/3 full, which is approximately 4 cake mixes, but the amount of batter can vary – so we definitely recommend not overfilling it. Also to know, what temperature do you bake a 12×18 cake? 350 degrees F How long to bake a cake in a 11×15 pan?I use two cake mixes (I prefer Pillsbury). I bake at 350 for about 30 minutes. I set the bell for 25 and check often from there. I use bake even strips always too.
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