Heat oven to 350 degrees F. Line a muffin tin with paper liners and set aside.
In a large bowl, mix together the flour, wheat bran, pumpkin pie spice, baking powder, baking soda, and salt.
In a medium bowl, whisk together the pumpkin, honey, eggs, buttermilk, and coconut oil.
Add the wet ingredients to the dry ingredients and stir until combined.
Divide batter evenly among muffin cups. Bake in oven for 20 minutes, or until a toothpick inserted in the centre of muffins comes out clean. Cool slightly in pan, then remove from pan and cool on a wire rack (or eat them warm with some butter!!)