Whisk butter and sugars: In a large mixing bowl, whisk together the melted butter, dark brown sugar, and granulated sugar until smooth and glossy.
1 cup salted butter, 1 cup dark brown sugar, 3/4 cup granulated sugar
Add wet ingredients: Add the eggs one at a time, whisking well after each addition. Stir in the vanilla extract.
2 large eggs, 2 tsp. vanilla extract
Combine dry ingredients: In a separate bowl, whisk together the flour, cocoa powder, espresso powder, baking soda, baking powder, and salt.
2¼ cups all-purpose flour, 1/2 cup unsweetened cocoa powder, 1 tsp. espresso powder, 1 tsp. baking soda, 3/4 tsp. baking powder, 1/2 tsp. fine salt
Mix wet and dry: Gradually add the dry ingredients to the wet mixture, stirring just until combined. If using chocolate chips or chunks, fold them in gently.
1 cup chocolate chips or chunks
Chill the dough: Cover the bowl and let the dough rest in the refrigerator for 10-15 minutes. This helps firm the dough and prevents excessive spreading in the oven. Start Timer
Preheat the oven: While the dough chills, preheat the oven to 350°F (175°C). Line two baking sheets with parchment paper.
Shape the cookies: Scoop the dough into 2-tablespoon portions (about 1½-inch balls). Roll each ball lightly in granulated sugar, then place them on the prepared baking sheets, spacing about 2 inches apart.
Granulated sugar
Bake: Bake for 8–10 minutes, or until the edges are set but the centers still look slightly soft. Do not over-bake! This keeps the cookies chewy. Start Timer
Cookie scoot: If desired, use a round cookie cutter or the back of a spoon to gently “cookie scoot” around the edges right after baking to create perfectly round cookies.
Cool: Let the cookies cool on the baking sheet for just 1-2 minutes before transferring to a wire rack to cool completely.
Finishing: Sprinkle a little more granulated sugar on top of the cookie for extra sparkle and fun! Enjoy!