Ahi can anyone help me? I need to make a cake that is 11 x 22 inch, do i make one big one ir small ones put together,any recipes for large one?

A11 x 16 not 22

Wilton makes an 11 x 15 that holds the equivalent of about two mixes.  When frosted and decorated it would probably fit what you need.  This is actually a go-to size for me.  It is a great fit for larger house parties and bar-b-cues.

AThanks, i have a 11 x16 tin just not sure on amounts

I have a fat daddios 11 x 15  that I use all the time.  It is a very handy size.  the area of  2 9" round cake pans is 127 sq inches.  the area of an 11 x 15 rectangle is 165 sq inches.  (this disregards the height, assuming that it will be the same for both)

for an 11  x 15 pan I make 1.5 times the recipe that I would use for 2 9" rounds.  It will be just slightly taller.  Or double your recipe and make cupcakes with the extra.  HTH

AThanks you, i did 2 x 10" square recipe,tin is quite high,is in oven now will wait and see !