If you want to try "other cakey things" - try a brand depending on where you are, called Giddy Yo Yo - their "Raw Banana Bread" - it's just banana's.
I also have a temptation for cakey things..
I have also noticed that if I get enough minerals in my diet, sugar addictions are eliminated.
A nice skin complexion for myself has been from a diet, high in water, with daily water consumption, citrus fruits (although I have seen where a higher percentage of people cannot have citrus as it causes them to have outbreaks on their face.
Green juicing.
Lower fat depending on how much exercise - what kind of exercise, & how much water. Than my face tends to break out in very deep cystic acne if I get too much fat intake, but it varies on my activity levels.
Not everything that comes out onto our faces is a cause of eating badly, it may just be your body's way of eliminating what it cannot have. I say this because fruit juice, unpasteurized where I make it at home, causes me to have break outs, & although people may say, Oh, it's your bodies way of "detoxing" well not really. Not always. I have the experience of my own body, & they have theirs.
& again, exercise, can have a nice glow to the skin. & weekly exfoliation.