Hi, can any one let me know if my cake is having too much of butter? Or it due to my mixing process? Today i just bake another lemon cake which turn out ok from the outside, however it looks oily the bottom half and the other half just perfect. Seems that all the oil flow downward and stay there. What happen?

If you would post your recipe and mixing method it would help to diagnose your problem.

Are you saying the bottom of your cake looks oily/greasy? Could it simply be whatever it is that you are using so the cake doesn't stick to the pan? Are you using shortening in the pan? Butter? Wilton No Stick? All of those could leave an oily appearance on the bottom of the cake when you turn it out if you use a bit too much.