Birthday cake for baby with allergies?

My baby had terrible reactions when she had yogurt for the first time (at 7 months old) and when she had beef purée for the first time (at 9 months old) so I’m kind of anxious about letting her eat from a smash cake on her first birthday. What are some alternatives to the typical smash cake for babies with sensitive digestive tracts? (Bakeries that make special dairy-free cakes, fruit alternatives, etc??) She loves fruits and veggies. I was thinking of making a fruit salad kind of thing (with less sugar), but not sure if that’s a dumb idea or not. 😂

Any suggestions would be greatly appreciated! Thanks. 🙏🏻