Okay, so I finally got my kitchen cleaned up from yesterdays cake mess so I can start a new one today. (Does anyone else have to clean up their kitchen just so they can mess it up again? haha!) I've got everything organized, again... my dishes washed, again... and my pan ready. Heck, I've even got the idea all figured out! The problem is... I don't have a clue how to make a half white half chocolate cake without making a disaster out of the whole thing. Can someone please tell me what is the best way to make a 1/4 sheet half/half cake? Guess I should have figured that out first... lol! Cake is due tomorrow, so quick help would be appreciated! Thanks!
Here's how I make 1/2 sheet half-and-half cakes. You use one short half sheet pan (a.k.a. cookie sheet) to bake a vanilla sheet and one pan to bake a chocolate sheet. Cut each sheet down the middle, fill, and top to make a two layer cake from each flavor. Refrigerate to harden. Use buttercream to glue the two 1/4 sheet cakes together (forming a half sheet). Be sure to really push them together to prevent air pockets (or the cake will crack down the middle when you're done). Refrigerate to harden, then frost the whole 1/2 sheet as usual.
When I want to make 1/2 white and 1/2 chocolate cake I have done it 2 ways. I have taken a heavy of aluminum foil the size I need to divide the pan in half and folded it several times. Then I have my husband hold the foil in place while I pour the batter. After the batter is poured I remove the foil. I have also taken two cake pans and baked one white and one chocolate and placed them side by side on the cake board. Hope this helps.
I usually mix one bowl white and one bowl chocolate batter. Prep your pan, and grab one bowl in each hand. Pour slowly at the same time until your pan is as full as you would like it. Smooth out each side with a spatula to make a nice line down the center. Sometimes mine gets a bit of a curve in it or the center isn't exactly centered, but who can tell once the frosting is on it? This usually works really well for me. Can't take credit for it though. That was passed on by a friend who got it from who knows where. I know some people will also put a cake divider in the center of the pan, then pour each one individually. Never used that method myself. Always seemed like a lot of hassle. Hope that helps!
I'm glad my husband is home! I'll try the foil to seperate them - especially since I am pressed for time! thanks for your help!
hubby just informed me that he would be around because he's going to take a nap. oh dear. wish me luck. hehe!
Well the easiest way would be one white layer and one chocolate layer. 
From what I've seen of the checker board kit that Wilton sells, you'll need to find something to stick into the pan at the halfway point, pour white batter on one side, chocolate on the other and gently slide it out before placing it in the oven.
Hope this makes sense.
I'm drawing a blank right now on what that "thing" would be. Sorry :S
I have had problems with 1/2 and 1/2 so I would recommend baking two separate cakes and putting them together. The white and chocolate batters do not always bake at the same speed so one or the other could get dried out if you bake them at the same time. This may be more of an issue with scratch cakes. Good luck!
I hardly ever do a sheet cake that isn't 1/2 and 1/2. I turn a saucer upside down and set one end of the pan on that, to elevate it, then pour the white batter in the opposite end of the pan. After the chocolate is mixed up, I remove the saucer and pour the chocolate batter into the other end. The batters will "meet in the middle". No, the line isn't perfectly straight, but no one will notice and no one will care. I've seen people fight over the pieces in the center because they want a 1/2-n-1/2 piece.
I always get a kick out of the non-cake-makers who, when I explain how I do it, always (ALWAYS!!) asks "doesn't it all run together?????" 
It's not Kool-Aid. It's cake batter. They meet in the middle and touch ..... and STOP. It's always fun to watch them go "Ohhhhhhhhhhhh!!!!!!!!!!" 
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