Carefully slice the avocado in half, remove the stone and enjoy. According to the expert, this should now be “perfect for eating”.
However, he did warn avocado lovers that while 10 minutes is usually a good time for an avocado to ripen in the oven, it may need slightly longer depending on how hard it is to begin with.
This method will work for slightly under-ripe avocados, but not ones that are totally rock solid.
Taste of Home recommended that for the inedible avocados out there, people should grab an avo, an apple and a paper bag.
source: express.co.uk