This recipe was given to my grandmother by her dietitian. They are a very moist and tasty way to get your daily servings of bran. The recipe makes one gallon of batter that you keep covered in your fridge for up to 6 weeks so you can make fresh bran muffins daily or weekly with zero effort. Prep time includes 12 hour chill time. This recipe will make roughly 6 batches of 12 muffins, give or take depending on the size of your muffin pan. Note: I store my batter in a rubbermaid gallon pitcher with a pour top for ease of use.