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 cookies
Ingredients: 1 box of brownie mix; 1/2 cup of creamy peanut butter; 1/4 cup of vegetable oil; 2 large eggs; 1/2 cup of chocolate chips (optional); 1/4 cup of powdered sugar (for dusting)

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I recently discovered the joy of making cookies from brownie mix, and let me tell you, it’s a game changer! These Brownie Mix Peanut Butter Cookies combine the rich flavor of brownies with the irresistible creaminess of peanut butter. They’re incredibly easy to whip up, making them a go-to for those unexpected cravings or last-minute gatherings. The texture is soft, and chewy with a delightful peanut butter swirl. If you haven't tried them yet, you're in for a treat!

Created by

Elodie Fairfax

Last updated on 2026-04-14T15:00:56.628Z

Once I tried making cookies from a brownie mix, I was hooked! The dense, fudgy texture of chocolate brownies lends itself perfectly to cookies, creating a hybrid treat that’s impossible to resist. I remember the first time I made these for a gathering; they disappeared within minutes!

One of the magical moments in my baking journey was when I decided to swirl creamy peanut butter into the dough. This not only elevated the flavor but also gave the cookies an incredible texture. I recommend using a natural peanut butter for the best results. Trust me, you won’t regret it!

Why You'll Love These Cookies

Quick and easy preparation with minimal ingredients
A perfect blend of rich chocolate and nutty peanut butter
Soft and chewy texture that satisfies your sweet tooth

The Importance of Peanut Butter

Peanut butter not only brings a nutty richness to these cookies but also adds moisture, ensuring a soft and chewy texture. It binds the ingredients together effectively, replacing traditional butter or margarine. For a lighter cookie, you can substitute half of the peanut butter with unsweetened applesauce, which will still provide moisture but reduce calories and fat content. Just remember, using too much of a substitute could alter the cookie’s structure.

Perfecting Your Baking Technique

I recommend using a cookie scoop to ensure that each cookie is uniform in size, which helps them bake evenly. Make sure to drop the dough onto the prepared sheet without flattening it. These cookies will spread slightly, so spacing them about 2 inches apart is vital to avoid them touching while baking. Keep an eye on them; the cookies should look set around the edges but still soft in the center when you pull them out.

Ingredients

Gather the following ingredients to make these delectable cookies:

Ingredients

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

Once you have all the ingredients ready, let’s dive into the steps!

Instructions

Follow these simple steps to create your Brownie Mix Peanut Butter Cookies:

Preheat the Oven

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

Mix Ingredients

In a mixing bowl, combine the brownie mix, peanut butter, vegetable oil, and eggs. Stir until well combined and smooth. If you're adding chocolate chips, fold them in at this stage.

Form Cookies

Using a cookie scoop or tablespoon, drop spoonfuls of the dough onto the prepared baking sheet, spacing them about 2 inches apart.

Bake

Bake in the preheated oven for 10-12 minutes, or until the edges are set but the centers are still soft. They will continue to firm up while cooling.

Cool and Serve

Allow the cookies to cool on the baking sheet for a few minutes before transferring them to a wire rack. Dust with powdered sugar if desired and enjoy!

Your delicious Brownie Mix Peanut Butter Cookies are ready to be enjoyed!

Pro Tips

For an even richer flavor, add a pinch of sea salt to the dough. Also, feel free to experiment by adding nuts or caramel for a different twist!

Storing Your Cookies

These Brownie Mix Peanut Butter Cookies can be stored at room temperature in an airtight container for up to a week. To maintain their moist texture, consider placing a slice of bread in the container; it helps absorb excess moisture, preventing the cookies from becoming hard. If you want to keep them longer, freeze them: just place the cookies in a single layer on a baking sheet, freeze until solid, then transfer them to a freezer-safe bag.

Mix-In Variations

Feel free to customize your cookies with various mix-ins! For a delicious twist, try adding chopped nuts, like walnuts or pecans, for extra crunch. You can also stir in some toffee bits for added flavor. If you're a fan of coconut, shredded unsweetened coconut can bring a delightful texture and taste. Remember that adding too many mix-ins can change the dough consistency, so keep an eye on how much you add.

Questions About Recipes

→ Can I use a different nut butter?

Yes, you can substitute peanut butter with any nut or seed butter according to your preference.

→ How should I store the cookies?

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

→ Can I freeze the cookie dough?

Absolutely! You can freeze the cookie dough before baking. Just scoop the dough onto a baking sheet and freeze until solid, then transfer to a freezer bag.

→ What can I use instead of eggs?

You can use a flaxseed meal mixed with water or applesauce as an egg replacement for a vegan version.