When you dream or have a vision about a cake, it tells you that you should learn to delegate your work instead of doing everything yourself. Another explanation is selfishness or feeling that you don't get what you are due, you think you deserve more in life.
Yet another explanation is that the achievements you have made pay off, you will be successful.
A filled cake in your dream or vision tells you that you are on the right track and that you have made conscious choices, full of work and diligence, yet it does not seem to be completely finished. Another explanation is that you have the feeling that you are stuck, standing still or do not have the right options.
When you have a dream or vision about eating cake, it tells you that you will be rewarded for your hard work and that you will celebrate success. This dream or vision could also indicate that you want more than you can actually handle, so be patient.