Brownie Mix Peanut Butter Cookies

Highlighted under: Heavenly Confections

I simply can’t resist the combination of brownie mix and peanut butter, especially when it transforms into cookies. These Brownie Mix Peanut Butter Cookies are not only incredibly easy to prepare but also pack an explosion of flavor in every bite. The rich, fudge-like texture from the brownie mix paired with the nutty creaminess of peanut butter creates a delightful treat that satisfies my sweet cravings. One batch never lasts long in our house, and they're sure to be a hit with your family and friends too!

Aubrey Whitman

Created by

Aubrey Whitman

Last updated on 2026-02-24T04:33:36.290Z

When I first combined brownie mix with peanut butter for these cookies, I had no idea how much I would love them. The moment they came out of the oven, the smell enveloped my kitchen, hinting at the delicious treats that awaited. I took the first bite, and the soft texture melted in my mouth, balanced perfectly by the nutty flavor of peanut butter. It’s the simple things in life, and these cookies are sure to satisfy.

After making them a few times, I discovered that chilling the dough for just 15 minutes before baking really helps them hold their shape. This way, they come out thick and chewy, creating that perfect brownie-like experience. If you’re ever in need of a quick dessert that’s sure to impress, these cookies are the answer!

Why You Will Love This Recipe

  • Chewy texture with a rich chocolate flavor
  • Quick and easy to prepare with minimal ingredients
  • Perfect for gatherings or a cozy night in

Why Brownie Mix?

Using brownie mix as the base for these cookies not only saves time but also guarantees a rich, chocolatey flavor. The mix contains cocoa powder, sugar, and other ingredients that contribute to the fudgy texture, making these cookies irresistibly chewy. The brownie mix serves as a shortcut for achieving that dense, moist quality that can often be challenging when baking cookies from scratch. Just a quick stir and you’re on your way to cookie bliss!

Besides convenience, brownie mix helps to enhance the overall chocolate experience. The added cocoa means every bite delivers an intense flavor that pairs perfectly with peanut butter. If you love brownies, you’ll find everything you adore about them infused into these cookies, making them a unique treat that combines two of the most beloved desserts.

Peanut Butter Choices

When selecting peanut butter for these cookies, you have a couple of options: smooth or crunchy. Smooth peanut butter will create a homogeneous dough that yields soft, chewy cookies, while crunchy peanut butter adds delightful texture to each bite. If you prefer a nuttier flavor, I recommend adding some chopped peanuts for an extra crunch and flavor enhancement.

Make sure to choose a peanut butter without added sugars or oils for the best results. Natural peanut butter is a great choice since it provides a genuine peanut flavor without the extra sweetness, allowing the chocolate from the brownie mix to shine. If you’re dealing with nut allergies, you can easily swap in sunflower seed butter or a similar nut-free spread to keep this treat safe and delicious.

Baking Tips and Tricks

Baking time is crucial for perfecting these cookies. Keep an eye on them as they bake; the goal is to remove them when the edges are set but the centers are still soft and slightly underbaked. They will continue to firm up while cooling on the baking sheet. If you prefer a softer cookie, you may even want to start checking them at the 9-minute mark.

To enhance the flavor profile of your cookies, consider adding a teaspoon of vanilla extract to the dough. This subtle addition will round out the taste and eliminate any bitterness from the cocoa. If you’re feeling adventurous, a sprinkle of sea salt on top before baking can heighten the chocolate and peanut butter flavors, creating a delightful contrast that elevates these cookies even further.

Ingredients

  • Gather the following ingredients:

Ingredients

  • 1 box brownie mix (18 oz)
  • 1 cup peanut butter (smooth or crunchy)
  • 1/2 cup egg (about 2 large eggs, lightly beaten)
  • 1/4 cup flour
  • 1/2 cup chocolate chips (optional)
  • Make sure to measure ingredients carefully for the best results.

Instructions

  1. Follow these steps to create delicious cookies:

Preheat the Oven

Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

Mix the Ingredients

In a large bowl, combine the brownie mix, peanut butter, eggs, and flour. Mix until well combined. Stir in chocolate chips if desired.

Form the Cookies

Scoop tablespoon-sized portions of the dough and place them on the prepared baking sheet, spacing them about 2 inches apart.

Bake

Bake in the preheated oven for 10-12 minutes, or until the edges look set but the centers remain soft.

Cool and Serve

Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.

  1. Enjoy your delicious Brownie Mix Peanut Butter Cookies!

Pro Tips

  • For an extra twist, add a sprinkle of sea salt on top of the cookies right before baking.

Storing and Freezing

To store your Brownie Mix Peanut Butter Cookies, place them in an airtight container at room temperature for up to a week. If you want to keep them fresh for longer, you can store them in the refrigerator, where they will last about two weeks. Just remember to let them come to room temperature before serving for the best texture.

If you choose to freeze them, let the cookies cool completely first. Once cooled, layer the cookies between sheets of wax paper in a freezer-safe container or zip-top bag. They can last up to three months in the freezer. To enjoy, simply take out what you need and allow them to thaw at room temperature or pop them in the microwave for a few seconds for that fresh-baked feel.

Serving Suggestions

These cookies are delightful on their own, but why not elevate your dessert experience? Serve them warm with a scoop of vanilla ice cream or drizzled with chocolate syrup for an indulgent treat. You can also pair them with a glass of cold milk or a steaming cup of coffee; the chocolate and peanut butter flavors are incredibly complimentary to both.

For a fun twist, try making ice cream sandwiches by placing a scoop of your favorite ice cream between two cookies. Roll the sides in crushed peanuts or sprinkles for an extra touch, making them perfect for parties or summer gatherings. I guarantee these treats will be a highlight, combining all the comforting flavors of brownies and cookies into one delicious package.

Questions About Recipes

→ Can I use cookie butter instead of peanut butter?

Yes, cookie butter can be used for a unique flavor, but the texture may vary slightly.

→ How do I store leftovers?

Store cooled cookies in an airtight container at room temperature for up to a week.

→ Can I freeze these cookies?

Yes, you can freeze the dough before baking or the baked cookies for up to three months.

→ How do I make these cookies gluten-free?

Substitute the regular flour with a gluten-free flour blend or almond flour.

Secondary image

Brownie Mix Peanut Butter Cookies

I simply can’t resist the combination of brownie mix and peanut butter, especially when it transforms into cookies. These Brownie Mix Peanut Butter Cookies are not only incredibly easy to prepare but also pack an explosion of flavor in every bite. The rich, fudge-like texture from the brownie mix paired with the nutty creaminess of peanut butter creates a delightful treat that satisfies my sweet cravings. One batch never lasts long in our house, and they're sure to be a hit with your family and friends too!

Prep Time10 minutes
Cooking Duration12 minutes
Overall Time22 minutes

Created by: Aubrey Whitman

Recipe Type: Heavenly Confections

Skill Level: Easy

Final Quantity: 24 cookies

What You'll Need

Ingredients

  1. 1 box brownie mix (18 oz)
  2. 1 cup peanut butter (smooth or crunchy)
  3. 1/2 cup egg (about 2 large eggs, lightly beaten)
  4. 1/4 cup flour
  5. 1/2 cup chocolate chips (optional)

How-To Steps

Step 01

Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

Step 02

In a large bowl, combine the brownie mix, peanut butter, eggs, and flour. Mix until well combined. Stir in chocolate chips if desired.

Step 03

Scoop tablespoon-sized portions of the dough and place them on the prepared baking sheet, spacing them about 2 inches apart.

Step 04

Bake in the preheated oven for 10-12 minutes, or until the edges look set but the centers remain soft.

Step 05

Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.

Extra Tips

  1. For an extra twist, add a sprinkle of sea salt on top of the cookies right before baking.

Nutritional Breakdown (Per Serving)

  • Calories: 120 kcal
  • Total Fat: 7g
  • Saturated Fat: 2g
  • Cholesterol: 30mg
  • Sodium: 50mg
  • Total Carbohydrates: 12g
  • Dietary Fiber: 1g
  • Sugars: 8g
  • Protein: 3g