1-Preheat and prepare: Preheat the oven to 350 degrees Fahrenheit and line a baking sheet with parchment paper.

2-Cream butter and sugar: Beat the butter and sugar together until light and creamy, about 4 minutes. This step incorporates air into the mixture for lighter cookies.

3-Add eggs and vanilla: Add the eggs one at a time, mixing after each addition, then stir in the vanilla extract until fully combined.

4-Combine dry ingredients: In a separate bowl, sift together the flour, cocoa powder, baking soda, and salt. This ensures even distribution and prevents lumps.

5-Mix wet and dry ingredients: Add the dry ingredients to the butter mixture and mix until just combined, scraping the bowl to ensure even mixing. Be careful not to overmix.

6-Scoop the dough: Scoop rounded tablespoons of dough onto the prepared baking sheet, leaving space between each for spreading.

7-Bake: Bake for about 9 minutes, until the edges are crisp and the tops are set but not wet. The centers will continue to cook from residual heat after removal.

8-Add finishing touches: Immediately sprinkle with coarse sugar or flaky salt while the cookies are still hot if desired.

9-Shape if needed: If the cookies are misshapen, gently press them into circles with a spatula right after removing from the oven.

10-Cool and enjoy: Let the cookies cool on the pan for a few minutes before transferring to a wire rack. This allows them to set without breaking.