I tend to use cups for baking, these american style cups (don't be confused and use mugs) come in 1, 1/2, 1/3 and 1/4 sizes usually in a set of four. They are really quick and easy to us. If you don't have cups there is a really good conversion here
Most vegan baking uses a bowl of 'dry' and a bowl of 'wet' ingredients. The wet and dry are mixed separately first, then added together and mixed.
First the dry: 1 and 1/2 cups self raising flour 1/2 cup cocoa 1 teaspoon baking soda 1/4 teaspoon baking powder 1/2 teaspoon salt 1 cup sugar (any sugar you like) 1 cup vegan chocolate chips or broken chocolate
Then the wet: 1 cup mashed bananas (i use 2-4 depending on how many i have) 1/2 cup almond or soy milk 1 teaspoon apple cider vinegar 1 teaspoon vanilla extract 1/3 cup coconut oil
Hot to make:
Add the cider vinegar to the milk and set aside (it will curdle) Mix all the dry ingredients in a bowl Mash the bananas and add to the coconut oil and vanilla extract. Then add the curdled milk/vinegar mix Add the wet to the dry and mix week. Add the chocolate chips and mix Put mix into 12 muffin cases (might make a duple of extra ones)
Bake for 20-25 minutes at 180C
Cool in the tin for 10 mins, then transfer to a wire rack still in their cases.