Brownie Mix Peanut Butter Cookies

Highlighted under: Oven Fresh Creations

I love making these Brownie Mix Peanut Butter Cookies when I want a quick and satisfying treat. With just a few ingredients, I can whip up these delicious cookies that perfectly balance the rich chocolate flavor of brownie mix with the creamy texture of peanut butter. They’re incredibly easy to make and always a hit with friends and family. Whenever I have a craving for something sweet, these cookies are my go-to recipe because they deliver on taste without the fuss of traditional cookie-making.

Gwendolyn Reed

Created by

Gwendolyn Reed

Last updated on 2026-02-27T13:49:34.907Z

When I first made these cookies, I was amazed at how a simple brownie mix could transform into something so wonderfully different. I mixed in creamy peanut butter and was delighted by the result. The cookies came out soft, chewy, and packed with flavor—perfect for any chocolate lover.

I've found that letting the dough sit for just a few minutes before baking enhances the flavors even more. Each bite is a delightful blend of brownie and cookie that always leaves me wanting more. They truly satisfy my sweet tooth!

Why You Will Love This Recipe

  • Rich chocolate flavor that pairs beautifully with peanut butter.
  • Quick to make with minimal ingredients—perfect for busy days.
  • Soft and chewy texture that melts in your mouth.

Texture and Flavor Appreciation

The combination of brownie mix and peanut butter creates a unique flavor profile that is both rich and satisfying. The sweetness of the brownie mix is perfectly balanced by the nuttiness of the peanut butter, making each bite irresistible. This decadent flavor can be enhanced further with chocolate chips. I always recommend using high-quality chocolate chips; they add depth and ensure that the chocolaty richness shines through in every cookie.

The texture of these cookies is another standout feature. Each cookie has a soft and chewy core, while the edges develop a slight crispness during baking. Bake them just until you see set edges, and don't worry if the centers seem a bit underbaked; they'll firm up as they cool on the baking sheet. This method prevents dryness and keeps them enjoyable for days.

Ingredient Insights

Using a box brownie mix simplifies this recipe, but it also provides a base that is both consistent and reliable. The mix typically contains sugar, flour, cocoa powder, and leavening agents, which means they help maintain a balance of sweetness and structure. For those looking to make this recipe gluten-free, many brands offer gluten-free brownie mixes that work just as well in this context.

Peanut butter isn’t just for flavor; it plays a crucial role in creating moisture and binding the ingredients together. Natural or creamy peanut butter yields the best results, but you can also use chunky peanut butter for added texture. If you're trying to reduce sugar or calories, consider using a reduced-fat peanut butter. However, note that this may alter the creaminess you achieve in the final cookie.

Storage and Variations

Once cooled, these cookies can be stored in an airtight container for up to a week. If you want to enjoy them later, freeze the dough balls before baking. Just scoop the dough onto the baking sheet, freeze until solid, then transfer to a freezer bag. They can go straight from the freezer to the oven - just add a couple of extra minutes to the baking time for perfect results.

If you’re looking to experiment, consider mixing in different flavors or ingredients. For a fun twist, try adding a teaspoon of vanilla extract or a sprinkle of sea salt on top just before baking. You can also try incorporating crushed pretzels or nuts for an added crunch. These variations can elevate the classic recipe and cater to different tastes.

Ingredients

Gather these ingredients to start making your cookies:

Ingredients

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

Combine the ingredients well for the best results!

Instructions

Follow these simple steps to bake your cookies:

Prepare the Dough

In a large bowl, combine the brownie mix, peanut butter, vegetable oil, and eggs. Mix until fully incorporated. If desired, fold in the chocolate chips for extra richness.

Form the Cookies

Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper. Scoop tablespoon-sized balls of dough and place them on the sheet, leaving space between each cookie.

Bake

Bake in the preheated oven for about 12 minutes, or until the edges are set but the centers remain soft. Remove from oven and let them cool on the baking sheet for 5 minutes before transferring to a wire rack.

Enjoy your cookies warm or store them in an airtight container!

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Pro Tips

  • Try adding chopped nuts or a sprinkle of sea salt on top to elevate the flavors.

Baking Tips

Keeping an eye on your cookies while baking is essential. Since ovens can vary, check them a few minutes earlier than the stated time. Look for slightly puffed centers and set edges—these are clear indicators that your cookies are ready to come out. Remember, they will continue to cook slightly after being removed from the oven due to residual heat.

If you're looking for an ultra-smooth finish, I recommend using a cookie scoop for uniformity. This simple tool helps keep your cookie sizes consistent, ensuring that they bake evenly and offer the same delightful texture. Additionally, if you find your dough too sticky to handle, refrigerate it for about 30 minutes before forming the cookies.

Serving Suggestions

These Brownie Mix Peanut Butter Cookies are divine on their own, but they can also be elevated to another level with simple accompaniments. For a delightful treat, serve them warm with a scoop of vanilla ice cream and a drizzle of hot fudge. The combination of warm cookie and cold ice cream is irresistible and perfect for dessert enthusiasts.

You might also consider making sandwich cookies by pairing two cookies together with peanut butter frosting or whipped cream in between. This makes for a fun presentation and allows for extra indulgence. Either way, a glass of cold milk or a warm cup of coffee pairs beautifully with these cookies.

Questions About Recipes

→ Can I use a different nut butter?

Yes, almond butter or cashew butter can be great alternatives to peanut butter.

→ How should I store the cookies?

Keep them in an airtight container at room temperature for up to one week.

→ Can I freeze the cookie dough?

Absolutely! You can freeze the dough for up to 3 months. Just thaw it in the fridge before baking.

→ What should I do if the dough is too sticky?

If the dough feels too sticky, try chilling it in the refrigerator for about 15-20 minutes before forming the cookies.

Brownie Mix Peanut Butter Cookies

I love making these Brownie Mix Peanut Butter Cookies when I want a quick and satisfying treat. With just a few ingredients, I can whip up these delicious cookies that perfectly balance the rich chocolate flavor of brownie mix with the creamy texture of peanut butter. They’re incredibly easy to make and always a hit with friends and family. Whenever I have a craving for something sweet, these cookies are my go-to recipe because they deliver on taste without the fuss of traditional cookie-making.

Prep Time10 minutes
Cooking Duration12 minutes
Overall Time22 minutes

Created by: Gwendolyn Reed

Recipe Type: Oven Fresh Creations

Skill Level: Easy

Final Quantity: 24 cookies

What You'll Need

Ingredients

  1. 1 box brownie mix
  2. 1/2 cup peanut butter
  3. 1/2 cup vegetable oil
  4. 2 large eggs
  5. 1/2 cup chocolate chips (optional)

How-To Steps

Step 01

In a large bowl, combine the brownie mix, peanut butter, vegetable oil, and eggs. Mix until fully incorporated. If desired, fold in the chocolate chips for extra richness.

Step 02

Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper. Scoop tablespoon-sized balls of dough and place them on the sheet, leaving space between each cookie.

Step 03

Bake in the preheated oven for about 12 minutes, or until the edges are set but the centers remain soft. Remove from oven and let them cool on the baking sheet for 5 minutes before transferring to a wire rack.

Extra Tips

  1. Try adding chopped nuts or a sprinkle of sea salt on top to elevate the flavors.

Nutritional Breakdown (Per Serving)

  • Calories: 150 kcal
  • Total Fat: 8g
  • Saturated Fat: 2g
  • Cholesterol: 25mg
  • Sodium: 60mg
  • Total Carbohydrates: 18g
  • Dietary Fiber: 1g
  • Sugars: 10g
  • Protein: 3g