Peanut Butter Blueberry Collagen Muffins Print 5 LikeDislike By Shyette Edwards You’ll love my peanut butter and blueberry muffins because they are the perfect balance of rich, creamy peanut butter and light and sweet blueberries, with the benefits of the Further Food Collagen. I make a batch of these on Sunday and have ready to go breakfast for the week! Enjoy!