Packed full of fiber, these triple berry muffins are a delicious and nutritious treat for any time of the year. This recipe is full of measuring, a skill that every kid chef can easily learn at a young age. Measuring while cooking is a great way to introduce kids to fractions. There are a lot of ingredients in this recipe that you might be able to find at home in your kitchen, but it also includes a few fiber-packed ingredients like bran and whole wheat flour.