Let’s bring these cookies to life in your kitchen:

1. Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.
2. In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt. Set aside.
3. In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy, about 3-4 minutes.
4. Add the egg and vanilla extract to the butter mixture, beating until well incorporated.
5. Gradually add the dry ingredients to the wet mixture, stirring just until combined. Fold in the chocolate chips.
6. In a small bowl, microwave the peanut butter for about 15-20 seconds, just until slightly softened.
7. Drop spoonfuls of cookie dough onto the prepared baking sheets, about 2 inches apart. Use a small spoon to drizzle some of the softened peanut butter over each mound of dough, then use a toothpick to swirl it into the dough.
8. Bake for 10-12 minutes, or until the edges are set and the centers are slightly soft. Allow them to cool on the baking sheets for 5 minutes before transferring to a wire rack to cool completely.

And there you have it—warm, gooey cookies with a swirl of peanut butter that’s sure to bring joy to everyone who bites into them.