I think you left out "for" before "you"
I did- thanks for pointing it out. I have now corrected it.
no offense to anyone but saying it I made it 'SPECIALLY' to you sounds like you are giving it to some retard.
Both can be used - but the emphassi is different.
Special - means that extra effort has put into making the cake.
Especially - mean the cake is made for that single individual
YHL is right - but it would be "special," not "specially."