Dutch cocoa and creamy peanut butter chips turn these Chocolate and Peanut Butter Chip Cookies into a rich, soft-baked treat that’s ideal for lunchbox sweets or after-dinner cravings.
Preheat the oven to 350 degrees Fahrenheit (175 degrees Celsius). Line the baking sheets with a silicone baking mat or parchment paper.
In a medium bowl, combine the flour, cocoa powder, baking soda, and salt. Gently whisk to combine.
In the bowl of an electric mixer, combine the sugars, peanut butter, and butter. Beat on medium speed for approximately 1–2 minutes, until creamed. Add the egg, vanilla extract, and milk. Mix until smooth.
With the mixer on low, slowly add the dry ingredients until incorporated.
Remove from the mixer and gently fold in the peanut butter chips and 1/2 cup chopped peanut butter cups with a spatula (reserve the remaining 1/2 cup).
Using a cookie scoop, drop the cookie dough balls (about 3 tablespoons) onto the lined baking sheets. The cookies will not spread very much, so they can be about 2 inches apart from each other. Gently press to flatten them a bit, then press a few pieces of the remaining peanut butter cups into each cookie.
Place the cookies in the oven and bake for 10–12 minutes, rotating the pan halfway through the baking process. The cookies will look slightly underbaked, but that’s okay—you don’t want to overbake them. Remove from the oven and let them cool on the sheets for 8–10 minutes. Transfer to a wire rack to cool completely.
Notes
STORE Triple Peanut Butter Cookies in an airtight container at room temperature once they’ve completely cooled, and they’ll stay fresh for up to 4 days. For longer storage, FREEZE in a freezer-safe bag or container and freeze them for up to 2 months.When you're ready to enjoy them, let the cookies thaw at room temperature for about 30 minutes. If you prefer them warm and gooey, REHEAT one in the microwave for 10–12 seconds.