Cut the big ripe avocado into half and remove the seed.Chop it roughly.
In a mixer jar add the chopped avocado, sugar, oil, milk and blend it into a smooth paste.
Remove the paste into a mixing bowl. Add the lemon zest into it. Add the lemon juice and keep it aside for five minutes.
In the meantime, sift the dry ingredients - whole wheat flour, baking soda, baking powder and salt three to four times.
Now after five minutes mix the lemon avocado mixture.
Gradually add the dry ingredients in batches and mix them well.
Add two -three tbsp of choco chips and fold the mixture gently.
Line the cupcake tin with the cupcake liners and spoon the batter into it. Sprinkle the remaining choco chips over them as shown.
Tap the mould and bake the cupcakes in a preheated oven at 180 C for 25-30 minutes or till done. Insert a skewer and check. If it comes out clean the cupcakes are done.
Cool them on a wire rack and serve warm or cold.