Pre-heat oven to 375F/190C. If necessary, grease the muffin pan with margarine or olive oil.
Mix the almond milk with vinegar and set aside.
Combine the flour, baking powder, cinnamon, and salt in a large mixing bowl.
Add the milk mixture to a medium-sized bowl and whisk the oil, maple syrup, vanilla extract, and orange zest together.
With a rubber spatula, stir the wet ingredients into the dry ingredients until they are just moistened. Fold in blueberries.
Pour the batter into each muffin cup, about 3 tablespoons per one.
Bake the muffins for 15-20 minutes or until the tops of the muffins are golden and a toothpick is inserted into the middle comes out clean.
Then, transfer the tin onto a cooling rack for 5 minutes. Remove the muffins from the tin, and allow them to cool completely.