Brownie Mix Peanut Butter Cookies

Name: Brownie Mix Peanut Butter Cookies
Prep time: 10 min
Cook time: 10 min
Total time: 20 min
Yield: 24 cookies
Ingredients: 1 box of brownie mix (about 18 oz); 1/2 cup peanut butter; 1/2 cup vegetable oil; 2 large eggs; 1/2 cup chocolate chips (optional); 1/4 cup powdered sugar (for dusting, optional)

Highlighted under: Soft Recipes

I absolutely love making these Brownie Mix Peanut Butter Cookies whenever I'm craving something sweet and easy. Using a brownie mix as the base not only simplifies the baking process but also enhances the rich chocolate flavor that combines perfectly with the creamy peanut butter. In just about 20 minutes, I can whip up these delightful cookies, which always impress family and friends. They are soft, chewy, and the perfect treat to enjoy with a glass of milk or even on their own!

Created by

Aileen Prescott

Last updated on 2026-02-24T03:09:36.337Z

When I first tried out this recipe, I was taken aback by how easy it was to combine two of my favorite flavors: chocolate and peanut butter. It seemed like a match made in heaven! To ensure the cookies turned out perfectly moist and fudgy, I made sure to not over-bake them, pulling them out just as the edges turned golden.

Each bite offers a delightful harmony of flavors, and the use of a brownie mix makes this treat so quick to prepare. I recommend letting them cool slightly on the baking sheet to enhance their chewy texture. Trust me, they won’t last long!

Why You'll Love These Cookies
Rich chocolate flavor paired with creamy peanut butter
Quick and easy to prepare, perfect for last-minute cravings
Decadent texture that strikes a perfect balance between chewy and fudgy

Understanding the Base

Using a brownie mix as the foundation for these cookies not only saves time but also enriches them with a deep, chocolatey essence. The brownie mix contains a blend of cocoa powder, sugar, and flour, which helps create a moist and fudgy texture that pairs beautifully with peanut butter. This combination will deliver a cookie that is both chewy on the inside and slightly crisp on the edges, giving you the best of both worlds with every bite.

Another important aspect to consider when choosing a brownie mix is the quality of ingredients. Opting for a mix that uses real cocoa rather than artificial flavoring will elevate the chocolate flavor significantly. When you see a mix that lists cocoa powder as one of the primary ingredients, you can expect a richer, more satisfying cookie that complements the creamy peanut butter perfectly.

Technique for Texture

When mixing the ingredients, be careful not to overmix the batter once the eggs are added; just blend until everything is incorporated. Overmixing can result in tough cookies rather than the soft, chewy texture that we're after. Mixing until just combined allows air to integrate into the dough, which contributes to a lighter texture.

To achieve the perfect bake, keep a close eye on the cookies during the last few minutes in the oven. The edges should appear set and slightly firm to the touch, while the centers will look soft and might even be a bit glossy. If you bake them until they're completely firm, you'll lose that desirable chewy element, so trust your instincts as they near the end of the baking time.

Ingredients

Gather the following ingredients to make your Brownie Mix Peanut Butter Cookies:

Ingredients

1 box of brownie mix (about 18 oz)
1/2 cup peanut butter
1/2 cup vegetable oil
2 large eggs
1/2 cup chocolate chips (optional)
1/4 cup powdered sugar (for dusting, optional)

Ensure all ingredients are at room temperature for the best results.

Instructions

Follow these simple steps to bake your cookies:

Prepare the Dough

In a mixing bowl, combine the brownie mix, peanut butter, vegetable oil, and eggs. Mix until well combined and smooth. If desired, fold in chocolate chips for an extra chocolatey burst.

Scoop and Bake

Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper. Use a tablespoon to scoop the dough onto the prepared baking sheet, leaving about 2 inches between each cookie.

Bake to Perfection

Bake in the preheated oven for 8-10 minutes. The edges should be set, but the centers might look slightly underdone. Remove from the oven and let them cool on the baking sheet for a few minutes before transferring to a wire rack.

For an extra touch, you can dust the cookies with powdered sugar before serving.

Pro Tips

For an even richer flavor, try using dark chocolate brownie mix. You can also add nuts or dried fruit for added texture and flavor.

Ingredient Substitutions

If you're looking to make these cookies gluten-free, a gluten-free brownie mix works wonderfully in place of the regular one. You'll still achieve a rich chocolate flavor and fudgy texture, making it a great option for those with dietary restrictions. Just ensure that any other additions, like chocolate chips, are also gluten-free.

For a healthier twist, you can substitute half of the peanut butter with unsweetened applesauce. This will create a slightly different flavor profile but still maintain moisture and a chewy texture. However, if you decide to cut the sugar by using natural sweeteners, like honey or maple syrup, consider adjusting the dry ingredients to maintain the consistency.

Storage and Serving

These cookies can be stored in an airtight container at room temperature for up to one week, making them a perfect treat for meal prep or last-minute gatherings. If you want to extend their lifespan, consider freezing them. Place the cooled cookies in a single layer on a baking sheet, freeze for about an hour, and then transfer them to a freezer-safe bag for up to three months. You can bake them fresh whenever the craving strikes!

When serving these cookies, I love to pair them with a glass of cold milk or a scoop of vanilla ice cream. The combination of the creamy ice cream with the rich, fudgy cookie creates a delightful dessert experience. You could even drizzle some chocolate syrup over the top to intensify the chocolate goodness!

Questions About Recipes

→ Can I use natural peanut butter instead of regular peanut butter?

Yes, but natural peanut butter may change the consistency of the dough slightly. Try to choose a creamy variety without added sugar.

→ How should I store the cookies?

Store the cookies in an airtight container at room temperature for up to a week or in the freezer for up to three months.

→ Can I make these cookies gluten-free?

Absolutely! Just use a gluten-free brownie mix as a substitute.

→ What can I do if the dough seems too sticky?

If the dough is too sticky to scoop, chill it in the refrigerator for about 15 minutes before forming the cookies.