Place the chocolate chips in a glass bowl, and then microwave them in 30-second intervals at 50% power. Remember to stir between each interval to ensure a smooth consistency. Once done, set it aside.
Begin by scooping the avocado insides into a separate bowl, then mashing them with a fork until you have about 2/3 cup. Next, incorporate the majority of the melted chocolate into the avocado mixture, saving approximately 3 tablespoons for a delightful drizzle or topping at the end. Don't forget to cover the reserved chocolate with plastic wrap and leave it on the counter for now.
Incorporate crushed pecans (setting aside 2 tablespoons for a potential topping), vanilla, and salt into the chocolate avocado mixture, ensuring thorough blending. Cover the bowl with plastic wrap and refrigerate for 30 minutes.
In a small shallow bowl, combine cocoa powder and espresso powder, then stir thoroughly.
After chilling, the truffle mixture should be easy to scoop and roll into 1-inch balls. If not, chill it longer.
To enhance your truffles with a chocolate drizzle and chopped pecans, follow these steps for a perfect finish: Reheat the reserved melted chocolate in the microwave until it reaches a drizzly consistency, being careful not to overheat and risk scorching. Then, using a spoon, elegantly drizzle the chocolate over each truffle, and generously sprinkle the reserved chopped pecans on top.
After drizzling with chocolate, pop the sheet pan in the fridge for 5-10 minutes to set it. Once done, transfer the truffles to an airtight container and keep them refrigerated until you're ready to savor them!