Pre-heat the oven to 160C(320F) fan-forced and grease or line two baking trays.

Place the butter, avocado, essence, sugar and honey in the bowl of an electric mixer and beat until smooth.

Add the egg and beat it through just until combined.

Take the bowl off the stand and add the flours, cocoa, baking soda and bicarb soda and stir them through.

Finally, stir in the chocolate chips.

Use a teaspoon to place blobs of dough onto the baking trays leaving 2cm between each one.

Gently press the top of each one down a little with your fingers or the back of a spoon.

Bake the biscuits for 12-15 minutes.

Leave them to rest on the trays for 5 minutes to firm up and then transfer to a wire rack to cool completely.