First you want to grab a small mixing bowl and combine oats and milk. Place bowl aside and let oats absorb for 20-25 minutes
Preheat oven to 425 degrees and spray your muffin tray with non-stick spray
Whisk flour, baking powder, baking soda, cinnamon, and salt together well and set aside. Microwave butter until melted and let cool. Once cooled combine butter with honey, egg, and vanilla extract. Mix until combined
Pour the wet ingredients into the dry ingredients, stir a few times, then add the soaked oats (do not drain!)
Add blueberries to mix and stir gently until combined
Spoon the batter into liners, and top with a light sprinkle of coconut sugar if desired
Bake for 5 minutes at 425 then, keeping the muffins in the oven, reduce the oven temperature to 350°F Bake for an additional 15 minutes or so
Allow the muffins to cool on a cooling rack and enjoy!