The author has a website with corrections to this book. www.superbabyfood.com. This is what she said recently in an interview on webmd.
Member: At what age can I begin feeding my toddler peanut butter? I'm so afraid of food allergies.
Yaron: Peanuts can be a real problem in rare cases where people are severely allergic. If nut allergies run in your family avoid anything with peanut oil, peanut butter, etc., until baby is at least 3 years old and possibly avoid all together, depending on what your doctor says. Peanuts and peanut butter and all nuts and seeds are extremely nutritious foods, but in some cases allergies are a problem. So follow the advice of your pediatrician when deciding if and when to introduce peanut butter.
Her website corrections do not address peanuts, and recent copies of the book still state that nut butters are fine foods at 10 months of age. She can state to check with your pediatrician until she turns blue, but she still leaves it in her book--and that is very dangerous. Until that information is removed, I simply could not recommend this book to anyone. There are other rather glaring errors in her text that many reviewers have made note of, but this one, which could actually cause serious harm to a child, is abhorrent.