General Mills has issued the following statement:

We are so sorry to share that we are announcing a voluntary recall of four specific flavors of Nature Valley Protein Chewy Bars and Nature Valley Simple Nut Bars, because sunflower kernels in the bar are being recalled by our supplier for the potential presence of Listeria.

This recall only affects four flavors of Nature Valley’s nearly 40 different products. Those flavors are Nature Valley Protein Chewy Bars: Peanut, Almond & Dark Chocolate, Nature Valley Protein Chewy Bars: Honey, Peanut & Almond, Nature Valley Simple Nut Bar: Almond, Cashew & Sea Salt, and Nature Valley Simple Nut Bar: Roasted Peanut & Honey. Please check your home for the products affected by this recall, and discard them, regardless of when they were purchased or what date is on the package.