Preheat oven to 180°C. Line a muffin pan with oil/muffin cups.
Sieve the first 5 ingredients into a large mixing bowl. In a separate bowl, combine the rest of the ingredients.
Pour the bowl with the wet ingredients into the dry ingredients bowl and combine well. Stir in chocolate chips.
Pour batter into the muffin tray, and top with extra chocolate chips if desired.
Bake for roughly 10-15 mins or until a toothpick comes out clean!