Actually, kids should be exposed to nuts at between 4 and 6 months of age. Parents' eyes bug out when I tell them this. It was only when the American Academy of Pediatrics started recommending that nuts be withheld until two years of age that allergies to them started exploding. A bit of nut butter on the tongue of your child in the 4-6 month window may help desensitize them to the allergens in the nuts.