Well....I think there will be a lot more work and money involved that you think. If you plan on selling and marketing it at a store, it will need to be approved to be organic first. If not, I'm not sure many moms would buy their baby food from a company that isn't backed up by FDA, etc. Plus, many moms who are into organic usually make their own food to begin with, so that market may be over saturated with the organic food already there. Also consider the economy right now. Unless this food will be significantly less expensive, it might not be enough to cover your overhead right now since everyone is watching their budget.
My suggestion to get your foot in the door and get a feel for the market and trends is to try offering classes and/or write a book or start a website on making your own baby food. If you can get sponsors on your website, you can still make money and talking about what you love to do.