The 16 oz. mix makes one 9" x 5" loaf or 12 muffins. King Arthur Gluten Free Banana Bread + Muffin Mix is Non-GMO Project Verified; Certified Gluten-Free by The GFCO, a program of the Gluten Intolerance Group (GIG); Certified Kosher (instructions included to make the mix non-dairy or lower fat).