Preheat oven to 375
Combine natural sweetener and butter or coconut oil together in large bowl or electric mixing bowl
Mix together dry ingredients – flour, baking soda, baking powder and sea salt in a mixing bowl and set aside
Beat egg in mixing bowl
Alternate milk and dry goods alternatively and while that is mixing add the essential oil. Make sure it is thoroughly mixed but do not over mix
Fold in the blueberries by hand
Fill coconut oil sprayed muffin tins or line the muffin tins with papers and do not spray them
Fill muffin tins or papers about ⅔ full
Bake for 20-30 minutes