Avocado Truffles

From Kevin Smith, POPSUGAR Food

Inner chocolate truffle:
2/3 cup dark chocolate chips
2 tablespoons heavy cream
1/2 medium avocado

Outer white chocolate truffle:
1 3/4 cups white chocolate chips
1/3 cup heavy cream
1 1/2 medium avocados

Coating:
2 cups pistachios, finely chopped
2 tablespoons cocoa powder (plus more for coating your hands)

Combine the dark chocolate and heavy cream in a microwave-safe bowl. Heat for 30 second intervals, stirring well after each time. Do this for 1-3 minutes, or until a smooth, thick consistency is achieved.
Pour the melted chocolate into a food processor with the avocado. Process until smooth and scrape the sides as needed.
Pour into a bowl and refrigerate for at least an hour.
Repeat these exact steps for the white chocolate portion.
Once your chocolate has firmed up, coat your hands in cocoa powder and roll half-teaspoon-size balls of chocolate. Place them on a sheet tray and refrigerate until they firm back up (30 minutes to an hour).
Combine your chopped pistachios and cocoa powder in a bowl.
With hands coated in powdered sugar, place about a tablespoon of the firm white chocolate mix into your palm. Place one of the dark chocolate balls on top and carefully envelop it in the white chocolate. Roll the ball into your pistachios and place it on a sheet tray. Repeat this for each truffle.
Refrigerate once more until firm.