Prep the avocados: Halve, pit, and scoop the flesh into a blender or food processor. Make sure they’re ripe and green with no brown spots for the best flavor.
Add the base ingredients: Add cocoa powder, 1/3 cup powdered sweetener, almond milk, vanilla, and a pinch of salt.
Blend until smooth: Process on medium-high, scraping down the sides as needed.
Blend until the mixture is completely silky with no visible avocado pieces.
Adjust to taste: Taste and add more sweetener if needed. If it’s too thick, blend in 1–2 more tablespoons of almond milk until you reach your preferred texture.
Boost the chocolate (optional): For an ultra-rich mousse, blend in melted dark chocolate, heavy cream, or espresso powder.
Chill: Spoon into serving dishes and refrigerate for at least 30 minutes. Chilling helps the flavors meld and the texture set.
Garnish and serve: Top with whipped cream, berries, or shaved chocolate.
Serve cold.