Step 1

Preheat the oven to 350 F. Line 2 baking sheets with parchment paper or silicone baking mats.

Step 2

Microwave the butter in a large, microwave-safe bowl for about 40 seconds. Butter should mostly melted.

Step 3

Whisk the butter until it is completely melted.

Step 4

Add the sugars; mix until well-combined.

Step 5

Stir in vanilla and egg until incorporated.

Step 6

Add the flour, cocoa powder, baking soda, and salt. Please read the recipe note about properly measuring flour.

Step 7

Mix dough until just combined. Dough should be soft and a little sticky but not overly sticky.

Step 8

Stir in chocolate chips.

Step 9

Scoop out 1.5 tablespoons of dough (medium cookie scoop) and place 2 inches apart on baking sheet.

Step 10

Bake for 7-10 minutes, or until cookies are set. They will be puffy and still look a little underbaked in the middle.3