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Peanut Butter Brownie Cookies

Remember those after-school brownie-baking days? This recipe takes that nostalgic feeling and supercharges it with a gooey peanut butter center. Get ready for the easiest, most addictive cookies you'll ever make – no mixer required! It's a simple recipe that delivers maximum flavor, and perfect for gifting (or just keeping all to yourself!).
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Cook Time 12 minutes
Course: Cookie, Dessert
Ingredients Equipment Method Notes

Ingredients
  

  • 1 (18.3 oz) box fudge brownie mix Your shortcut to rich, decadent brownie flavor.
  • 2 large eggs For binding and richness.
  • 1/2 cup unsalted butter, melted Adds moisture and enhances the brownie flavor.
  • 1/2 cup creamy peanut butter The star of the show! Use your favorite brand.
  • 1/2 cup granulated sugar Balances the bitterness of the cocoa and enhances the sweetness.
  • 1/2 cup semi-sweet chocolate chips Because more chocolate is always better.
  • 1 teaspoon vanilla extract Enhances the overall flavor profile.
  • 1/4 cup unsweetened cocoa powder Adds depth and intensity to the brownie flavor.
  • 1/4 teaspoon salt Balances the sweetness and brings out the other flavors.
  • peanut butter for drizzling Optional: For an extra touch of peanut butter heaven!

Equipment

  • Baking Sheet
  • Large bowl
  • Wire rack

Method
 

  1. Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper – this makes cleanup a breeze!
  2. In a large bowl, combine the brownie mix, melted butter, eggs, vanilla extract, cocoa powder, and salt. Stir until everything is nicely combined. Then, gently fold in those delicious chocolate chips.
  3. Here’s a little trick I learned: scoop teaspoon-sized portions of peanut butter onto a parchment-lined plate. Pop it in the freezer for about 15 minutes. This helps keep the peanut butter firm and easier to handle.
  4. Now for the fun part! Scoop about 2 tablespoons of the brownie dough, flatten it slightly with your hand, enclose a frozen peanut butter portion, and roll it into a ball. Place it on your prepared baking sheet. Repeat until all the dough is used.
  5. Bake for 10-12 minutes, or until the edges are nicely set and the tops are starting to crackle. Keep a close eye on them – ovens can vary!
  6. Let the cookies cool on the baking sheet for about 5 minutes before transferring them to a wire rack to cool completely. Once cooled, drizzle with warmed peanut butter if you like. (I always do!)

Notes

Feel free to get creative! You can use different types of chocolate chips (milk chocolate, dark chocolate, even white chocolate!), or add chopped nuts for extra crunch. If you don’t have cocoa powder, you can omit it, but the flavor will be slightly different. Don't overbake! Slightly underbaked cookies will be gooier and more fudge-like. Make the peanut butter balls ahead of time and freeze them. This makes the cookie assembly super quick and easy. If your peanut butter is too soft, chill it for a bit before using it. Store your Peanut Butter Brownie Cookies in an airtight container at room temperature for up to 3 days, or in the refrigerator for up to a week. They freeze beautifully too – just pop them in a freezer bag for up to 2 months.