I don’t see why not, if it’s only got fruit and or veg in it. Obviously nothing that’s not vegan. I’ve seen apple baby food be recommended for force feeding buns with stasis before

I think you can make bunny ‘cakes’ out of ground pellets, oats and some sort of fruit mash.

I’m not sure about the baked part, but some people do feed bunnies baby food. Most of the time I’ve only heard of people doing this when the bunny is unwell and isn’t eating anything else though, so maybe someone else can chime in on this.

That said, it also depends on what kind of baby food. A lot of store bought ones contain sugar or some kind of artificial sweetener which isn’t good for bunnies. The 100% natural ones should be fine.

I think freezing would be fine. The act of baking does much more transformation for ingredients and their components, but I think if you’re simply either heating or freezing something with no additives that can be given to a rabbit plainly, it should still be safe both frozen and baked.

I think the best bet is for you to get the actual ingredient fresh, then do the mashing yourself prior to baking/freezing to ensure and preservatives or anything to do not transform into something potentially harmful in the freezing or baking process.