Brownie Mix Peanut Butter Cookies

Name: Brownie Mix Peanut Butter Cookies
Prep time: 10 min
Cook time: 12 min
Total time: 22 min
Yield: 24.0
Ingredients: 1 box brownie mix; 1/2 cup peanut butter; 1/2 cup vegetable oil; 2 large eggs; 1/2 cup chocolate chips (optional); 1/2 cup chopped nuts (optional)

Highlighted under: Sugar Bliss

I absolutely love whipping up these Brownie Mix Peanut Butter Cookies for a quick and satisfying treat. The chocolate brownie mix simplifies the cookie-making process, while the creamy peanut butter adds a rich flavor that truly elevates the experience. These cookies come together in just a few minutes, and they have a delightful chewy texture. With a crispy edge and a soft center, they are perfect for satisfying my sweet tooth any day of the week. Trust me, once you try these, you’ll be hooked!

Created by

Quinn Harper

Last updated on 2026-02-24T07:09:36.991Z

When I first decided to use brownie mix in my cookie recipe, I was pleasantly surprised by how delightful the results were. The combination of chocolate and peanut butter turns out to be nothing short of magical! The rich brownie flavor complements the nutty notes from the peanut butter perfectly. This method also keeps the cookies moist and soft, which is exactly how I like them.

I experimented with adding extra peanut butter chips and chopped nuts to the dough, which just took these cookies to the next level. If you're a peanut butter lover like me, don't skip this step—it adds texture and a burst of flavor that truly stands out!

Why You'll Love These Cookies
Easy to make with just a few ingredients
Rich, chocolatey flavor meets creamy peanut butter
Perfect for sharing or satisfying late-night cravings

Perfecting the Dough

When mixing the dough for these Brownie Mix Peanut Butter Cookies, it's crucial to combine your ingredients thoroughly to ensure a uniform texture. Any lumps from the brownie mix should be smoothed out to create a cohesive dough. If you find the mixture too thick, a splash of water or an extra tablespoon of vegetable oil can help achieve that perfect consistency without compromising flavor.

The addition of peanut butter not only enhances the flavor but also contributes to a chewy texture. When selecting your peanut butter, opt for a creamy variety rather than a natural one, as the latter may separate and affect the dough’s cohesion. For a fun twist, try using flavored peanut butters like honey or chocolate to elevate these cookies even further.

Baking Tips for Success

Baking the cookies at the right temperature is essential for achieving the ideal texture. An oven preheated to 350°F (175°C) provides the perfect environment for the cookies to rise slightly before settling. Keep an eye on them as they bake; they should start to develop golden edges while the center remains soft. You’ll know they are done when the edges are set but the center still appears slightly underbaked.

For even baking, I recommend rotating your baking sheet halfway through the baking time. Ovens can have hot spots, which may lead to unevenly baked cookies. If you prefer a denser texture, you can bake the cookies a minute or two longer, but be cautious not to let them overbake, as they will harden as they cool.

Ingredients

Gather these simple ingredients to create delicious brownies in no time!

Ingredients

1 box brownie mix
1/2 cup peanut butter
1/2 cup vegetable oil
2 large eggs
1/2 cup chocolate chips (optional)
1/2 cup chopped nuts (optional)

Make sure to have your ingredients ready before starting!

Instructions

Here's how to create these delicious cookies step by step.

Preheat the Oven

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

Mix Ingredients

In a large bowl, combine the brownie mix, peanut butter, vegetable oil, and eggs. Stir until well combined. If using, fold in chocolate chips and chopped nuts.

Scoop and Bake

Using a cookie scoop, drop rounded tablespoons of dough onto the prepared baking sheet, leaving space between each cookie. Bake for 10-12 minutes or until the edges are set.

Cool and Enjoy

Allow the cookies to cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely. Enjoy your cookies warm or store them in an airtight container.

Enjoy your freshly baked cookies!

Pro Tips

For an extra indulgent treat, try drizzling melted chocolate over the cooled cookies for a beautiful finish!

Storage and Freshness Tips

To keep your Brownie Mix Peanut Butter Cookies fresh, allow them to cool completely before storing. Place the cookies in an airtight container at room temperature for up to a week. If you prefer them warm, reheating them in the microwave for about 10 seconds can bring back that delicious, gooey texture.

For longer storage, consider freezing the cookies. Layer them between parchment paper in a freezer-safe container, where they can last for up to three months. When you're ready to enjoy, simply thaw at room temperature or reheat directly from the freezer for a warm, fresh cookie experience.

Variations and Add-Ins

Feel free to customize your Brownie Mix Peanut Butter Cookies by adding different mix-ins. Consider adding coconut flakes, dried fruits, or even white chocolate chips for a unique twist. You can also experiment with various nuts; walnuts or pecans add a delightful crunch and a different flavor profile to the cookies.

For a more indulgent treat, consider topping your baked cookies with a drizzle of chocolate ganache or a light sprinkle of sea salt after they cool. This simple addition enhances the overall flavor and provides a beautiful presentation, perfect for parties or special occasions.

Questions About Recipes

→ Can I use natural peanut butter?

Yes! Just ensure it's well-stirred and not too runny.

→ How should I store these cookies?

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

→ Can I freeze these cookies?

Absolutely! Freeze them in a single layer and store them in a zip-top bag for up to three months.

→ What can I substitute for eggs?

You can use flax eggs or applesauce as a substitute for eggs in this recipe.