1-First Step: Preheat oven to 350°F (175°C). Line two baking sheets with parchment paper. This setup ensures even baking and easy cleanup. Gather all ingredients for mise en place, saving time during mixing.

2-Second Step: In a large bowl, combine 1 cup creamy peanut butter, ½ cup granulated sugar, ½ cup brown sugar, 1 large egg, and 1 teaspoon vanilla extract. Stir vigorously with a wooden spoon or spatula until smooth and creamy, about 2 minutes. The mixture thickens as sugars dissolve. Scrape sides to incorporate everything fully. This base holds the cookie together without flour.

3-Third Step: Add ⅓ cup cocoa powder and ½ teaspoon baking soda to the wet mix. Stir until no dry pockets remain, about 1 minute. The dough turns fudgy and dark. Fold in 1 cup chocolate chips gently to distribute evenly. Overmixing crushes chips, so handle lightly.

4-Fourth Step: Scoop tablespoon-sized dough balls (about 1.5 tablespoons each) onto prepared sheets, spacing 2 inches apart. You get 24 cookies. Flatten each slightly with a fork, creating a crisscross pattern. This signature look aids even baking and adds crispness.

5-Fifth Step: Bake one sheet at a time in the middle rack for 10-12 minutes. Edges firm up while centers stay soft. Rotate halfway for uniform color. Watch closely; overbaking dries them out.

6-Final Step: Cool cookies on the sheet for 5 minutes; they firm as heat escapes. Transfer to a wire rack completely. Enjoy warm or store. Pair with milk, coffee, or ice cream for parties.