Bring a medium saucepan 1/3 full of water to a simmer over medium heat. Put the chocolate into a heatproof bowl, set it on the saucepan and turn off the heat. Let stand 5 minutes; stir the chocolate until smooth. Stir in the espresso powder. Cool to room temperature.
Put the avocados, honey, cocoa powder, almond milk, vanilla and salt in a food processor and pulse until coarsely mixed. Add the melted chocolate mixture and process until very smooth.
Spoon the mixture into 6 small dessert glasses and sprinkle chocolate shavings over the surface. Garnish with the raspberries.
The pudding can be served immediately or covered tightly (without garnishes) and refrigerated for up to 4 hours.