Methods for increasing the amount of resveratrol in a peanut material are provided, comprising the steps of providing a peanut kernel, size-reducing the peanut kernel, abiotically stressing the size-reduced peanut kernel, and incubating the abiotically stressed size-reduced peanut kernel under conditions capable of increasing the amount of resveratrol in the size-reduced peanut kernel. Resveratrol-enhanced peanut compositions prepared according to these methods are also provided.