Nothing complicated here...Start with your cooked veggie of choice, puree it, pour it into freezer trays, freeze it, and then seal the cubes in labeled Ziploc bags in the freezer. I've not priced it out to the penny, so I don't really know if it is cheaper than buying baby food. I don't see how it couldn't be cheaper, because a squash like I did here, only costs a few dollars. It makes enough squash cubes to last a good little while. I like doing it this way, because I like to know exactly what I'm feeding my kiddo. It's the real deal, so later when I'll plop that same squash in non-pureed form onto her plate, she'll have no issues eating it.
The little cubes are a handy size for the small portions babies eat. When I'm going out, I just toss a few cubes in a small Tupperware container and take them with me. They are normally melted by the time I need them. I've also done this exact same thing with cooked chicken, I just added a bit of water to thin it out.
As you know, cooking is not my thing in the least, but even I find this to be a pretty manageable task. =)