I need to bake several large sheet cakes 14x22x3. Which works better a box mix or a scratch recipe (and where do I find such a large recipe?) I only have a 6 quart kitchen aid mixer so i am guessing i do a couple of mixings? I ordered the pan from fatdaddys and it has yet to arrive but i am already nervous about the whole thing. I would love any in put. Thanks!!
First of all, make sure a pan that large will fit in your oven, sometimes they don't, and if not, you will have to bake 2 "halves" and put together. As far as receipes go, it's all in what you are used to doing, I do some of both- my white, chocolate, lemon, and german chocolate are mixes with the enhanced formula on here, all others are from scratch.
I would recommend using inverted flower nails in your pan to act as heating cores. When I did my friends' wedding cake the bottom tier was a 16" square and the pans are 3" deep so I had to do two mixings because I also have a smaller KitchenAid. I used WASC and just had to make lots of batter!
Thank you for the help! I am a bread baker at heart so this is very new territory for me! I looked at the wasc cake recipe and it looks like a winner to me! Going out to buy a couple of flower nails.... and to try the cake recipe so I can familiarize myself or maybe I just want cake Thank you!! 
I hope this pan you ordered will fit into your oven. I use two 12 x 18 sheets and put them together side by side to make a 24 x 18. Each pan takes 3 cake mixes (I use Pillsbury or Betty Crocker) It's important to have this cake on a covered piece of plywood for stability in my opinion. That will alleviate any cracking problems.
I have also found that lining the pan with parchment paper makes handling the cake easier (and less prone to cracking) when it's out of the pan - just leave it on until you're done flipping etc. and it's on your cake board.
I need to bake several large sheet cakes 14x22x3. Which works better a box mix or a scratch recipe (and where do I find such a large recipe?) I only have a 6 quart kitchen aid mixer so i am guessing i do a couple of mixings? I ordered the pan from fatdaddys and it has yet to arrive but i am already nervous about the whole thing. I would love any in put. Thanks!!
I just made a half a sheet 12x18x2 and it took 2 DHmixes. I would guess yours would take 3 mixes.
One suggestions, use strips or a flower nail for even baking!
First off let me thank everyone for all the great responses! I had measured my oven before ordering the pan and it fit (a bit close but it fit). I used the inverted nails, I only have two, and the wasc cake as suggested, I used 3 box mixes and increased the recipe from there....and wow! It turned out beautiful! I could have added more batter but for the maiden voyage with this huge pan it worked beautiful!! Love the cake recipe!
What a great site! Thank you all, once again for all the help!!
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