re: Help with dairy free eggless cake recipe

I’ve made many egg/diary/ gluten free cakes for my neighbour and good friends daughter Lauren.
Since your nephew isn’t gluten intolerant, you’re ok for regular ap flour. Just use your favourite cake recipe. Switch almond/rice/hemp milk for cows milk. Use aquafaba (chickpea liquid) as egg replacer. Works really well.
https://www.thekitchn.com/the-most-magical-egg-replacement-and-how-to-use-it-234588
And believe it or not, you can also make a Swissish mbc from aquafaba too. Photo posted here with the recipe. Now recipe calls for “vegan butter”, but I’ve found from my experience, makes the icing super soft. I just do the one cup of shortening, period. Which means you may have to increase the icing sugar slightly. Of course to avoid any greasy taste in the icing, I always add lots of butter flavoured extract, some lemon too. That really helps.
My usual vegan go too is this recipe
https://www.thekitchn.com/recipe-magic-vegan-icing-236214
It’s the easiest. It’s kinda like royal icing. So you can add a small amount of shortening to make a more creamy icing.
Hope this helps…❤️