Best Moist Double Chocolate Muffins

INGREDIENTS

1 cup

whole wheat/meal flour** (or all purpose flour if you don't have any, read note)

1 cup

all purpose flour

3/4 cup

castor sugar

1/2 cup

good cocoa powder (I used Valrhona)

1 tsp

espresso powder **(optional, read note)

1 tsp

baking soda

1/2 tsp

salt

1 cup

chocolate chips

1 cup

greek yoghurt

egg

1/2 cup

+ 2 tbsp (30ml) milk

1/2 cup

vegetable oil

1 tsp

vanilla bean paste/vanilla extract

1/4 cup

chocolate chips for topping