:) I am so glad that you are trying this recipie out :D i think it is the BEST devils food cake recipie ever, you will be very happy with the results :) but i have not doubled the recipie before but i have covered it in fondant and it worked out well for me, i just let it cooled then filled and crumb coated it and placed it in the freezer to set up and stiffen, then i placed the fondant on it. but in the end it did hold up good with the fondant…but if you look in my album the mickey mouse travel cake is the cake i covered in fondant using this recipie