1Preheat the oven to 375°F.
2In a medium bowl, whisk together the flour, sugar, cocoa, baking powder and salt.
3In a large bowl, whisk together the milk, oil, eggs and vanilla. Add the dry ingredients and chocolate chips and stir just until well blended.
4Fill paper-lined muffin cups and bake for 20-25 minutes, or until domed and springy to the touch.