The healthiest, moistest and most delicious bran muffin recipe you will find.
Preheat the oven to 400 degrees Fahrenheit.
Mix the milk and apple cider vinegar. Set aside for 5 minutes to allow it to turn into "buttermilk."
Mix the bran, flour, coconut sugar, baking powder, baking soda, salt, and cinnamon together in a bowl.
Mix the egg, molasses, oil, vanilla, and milk mixture together in another bowl.
Pour the wet ingredients into the dry and mix until combined.
Fold the rhubarb into the batter.
Spray a muffin tin with cooking spray, or line with muffin liners.
Transfer batter to muffin tin and fill 2/3 of the way full.
Bake for 15-17 minutes.