Preheat the oven to 400°F.

Put the flour, baking powder, baking soda, cocoa, stevia, and 3/4 cup of the chocolate chips into a large bowl and mix

Pour all the liquid ingredients into a measuring jug and mix

Now mix and dry and wet ingredients together

Spoon into the prepared muffin cases and then bake for 20 minutes or until the muffins are dark, risen and springy.