Halve the avocados, remove the pits, and scoop the flesh into the blender or food processor.
Add the cocoa powder, honey, milk, and vanilla extract to the blender.
Blend until the mixture is very smooth and creamy, scraping down the sides as needed.
Check the texture and add a little more milk if you prefer a thinner pudding, then blend briefly to combine.
Serve immediately or chill briefly before serving.