Preheat oven to 180°C (350°F). Line a baking sheet with parchment paper.

In a bowl, mix peanut butter, white sugar, and brown sugar until smooth.

Add eggs and vanilla extract. Mix well.

In another bowl, whisk flour, cocoa powder, baking soda, and salt.

Gradually add dry ingredients to wet mixture. Stir until combined.

Scoop tablespoon size dough balls onto baking sheet, spacing cookies apart.

Flatten each dough ball with a fork in a crisscross pattern.

Bake for 10-12 minutes. Let cool on a rack.