Since 1975, Nature Valley has used wholesome ingredients to make its best-tasting granola bars, with flavors and types for every taste. For the first time, Nature Valley is bringing chocolate to its great-tasting granola bars. The new Nature Valley Chewy Trail Mix bar and the Dark Chocolate & Nut bar, now available to convenience store retailers, are made with 100% natural ingredients including raisins, granola, nuts and dark chocolate. The 1.2-ounce bars have a suggested retail price of 89 cents each. Nature Valley is the top selling brand in the quickly-growing bar category, according to ACNielsen.