Step 1

Place 1 1/2 cups chocolate chips and butter in a microwave-safe bowl. Heat in 20-second increments, stirring between each interval, until chocolate/butter mixture is melted and smooth.

Step 2

In a large mixing bowl, whip eggs and sugar until thick and pale, about 2 minutes. Stir in vanilla and slightly cooled melted chocolate.

Step 3

In a small bowl, combine flour, cocoa, baking powder, and salt. Fold gently into chocolate mixture, then fold in remaining 1 cup chocolate chips.

Step 4

Cover dough and refrigerate for at least 2 hours (or overnight).

Step 5

Preheat oven to 350 degrees F. Divide dough into 1-inch balls, spaced 2 inches apart on a cookie sheet lined with a silicon mat or parchment paper.

Step 6

Bake for 9-11 minutes, until cookies just begin to crackle on top. Remove and allow to cool for 5 minutes before transferring to a cooling rack. Then indulge and enjoy!