No.1352
the most basic chocolate cake you can think of
No.1353
Chocolate cake is a little too boring. Something a little more interesting but unlikely to be an issue for allergies like pineapple upside down cake is probably the play.
No.1357
Perhaps not a true cake, but I usually go for brownies.
Very forgiving of small errors, but also easy to make better than any you can buy.
I'd suggest finding a popular recipe online, then sub some of the flour for more cocoa. Very few recipes use enough in my opinion.
Another low effort addition that people seem to love: Throw a layer of cookie mix at the bottom of the pan. Packet mix is fine, plain not chocolate works best.
You might need to pre cook it a little depending on the thickness and batter recipe.
Once that's dialed in though, soft, gooey and intensively chocolately Brownie over a light crunchy cookie layer is a delight.
No.1358
make cupcakes instead. chocolate and vanilla. any color frosting you want