01 -
In a large bowl, beat together the creamy peanut butter, softened butter, and brown sugar until light and fluffy.
02 -
Add the egg and vanilla extract, and mix until well combined.
03 -
Gradually stir in the flour, baking soda, and salt. Mix until just combined. Set aside.
04 -
In another bowl, whisk together the melted butter and sugar.
05 -
Add the cocoa powder, egg, and vanilla extract, and stir to combine.
06 -
Gradually mix in the flour, baking powder, and salt until smooth. Fold in the chocolate chips.
07 -
Chill both doughs for 30 minutes to firm them up.
08 -
Preheat the oven to 350°F (175°C).
09 -
On a baking sheet, scoop portions of both doughs together, swirling them lightly with a toothpick to create a marbled effect.
10 -
Bake for 9-11 minutes until the cookies are set around the edges but still soft in the center.
11 -
Allow the cookies to cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.