I just read this answer to this question from the user K? Re: Processed food?

I don't think there is a problem with feeding a six month old baby pureed vegetables that have been cooked from fresh. I certainly wouldn't call home cooked puree processed if that is what you are worrying about. You can't expect a baby to go from a milk diet to table food without pureeing. I think you are doing the right thing so stop worrying.