Trader Joe's is recalling its house brand of peanut butter over fears of possible salmonella contamination. The voluntary recall of Trader Joe's Creamy Salted Valencia Peanut Butter was announced on the company's website. No specific lot numbers are available. Officials with the specialty grocery chain said they were acting "out of an abundance of caution," stressing that there are no confirmed reports of contamination. Trader Joe's is offering refunds.