Preheat oven to 375 degrees F (190 degrees C). Grease muffin cups or line with paper muffin liners.
Step 2
Bake in preheated oven for 25 to 30 minutes, until a toothpick inserted into the center of a muffin comes out clean.
Step 3
In a large bowl, combine bran flakes, flour, brown sugar, baking powder and cinnamon. Stir in buttermilk, butter, and vanilla. Fold in cinnamon chips. Spoon mixture into prepared muffin cups.