If y'all use a decent box mix and use melted butter instead of vegetable oil, an extra egg, and milk instead of water, no one can tell the difference. I sure as hell can't.
Also, if you add a little almond extract to vanilla cake, or a little coffee to chocolate cake, it sends it through the roof.
This concludes me attempting to be helpful.
yo I can vouch for this
I've done this for the last few cakes I've made and holy crap it makes suuuuch a difference the cake is still fluffy, but it also seems more dense, and it doesn't dry out
like at all
you can leave it uncovered on the counter all day after being cut into, and it won't get all crusty and dry
this is an amazing way to take your cakes to the next level