In a large bowl, combine all of the ingredients expect the apple cider vinegar and chocolate chips, making sure the ingredients are well combined and the batter is smooth.
Add the apple cider vinegar and stir to combine. Then add the chocolate chips and mix to evenly distribute the chips throughout the mixture.
Pour into muffin papers or silicone muffin cups and bake for 14-17 minutes for regular sized muffins. For mini muffins, bake for 11-12 minutes. Once muffins are completely cooked, remove from oven and allow to cool before serving.
NOTE: THIS IS BASED ON THE INGREDIENTS WE USED, NUTRITIONAL INFORMATION MAY VARY DEPENDING ON THE INGREDIENTS USED.