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Peanut Butter Blondies cut into squares garnished with dark chocolate and chopped roasted peanuts.

Peanut Butter Blondies

5 from 6 votes

Chewy, buttery and loaded with peanuts and dark chocolate our Peanut Butter Blondies are a simple and delicious treat for the peanut butter lover in your life!

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Chewy, chocolatey Peanut Butter Blondies are easy to make, travel well and tick all the boxes of a great dessert.

A towering stack of peanut butter blondies with dripping pools of dark chocolate.


 

Peanut Butter Blondies

Blondies are arguably the perfect dessert. They’re a little bit cookie, slightly cake-like, not crazy sweet, and have a great chewy texture. For that extra something special top your blondie with a scoop of ice cream, a drizzle of caramel or a sprinkling of sea salt!

Everything about these Peanut Butter Blondies is dessert perfection. The peanut butter and chocolate combo is a classic and one of my all-time favorites.

The lightly salted chopped peanuts add a nice crunch to the chewy, buttery bites and brown butter gives them great butterscotch flavor.

Finally, they’re easily served and eaten just like a cookie, out of hand. One thing is for certain, these delicious little squares with the big peanut butter flavor won’t sit around for long.

A collage photo showing ingredients needed for Peanut Butter Blondies including sugar, butter, an egg and peanut butter.

Ingredients Overview

  • unsalted butter, browned and cooled
  • creamy peanut butter (like Jiff, not all-natural peanut butter)
  • all-purpose flour
  • baking powder
  • table salt
  • light brown sugar
  • egg
  • vanilla extract
  • bittersweet chocolate chips, peanut butter chips or a combination of both
  • salted roasted peanuts, rough chopped
  • dark chocolate bar, chopped for topping
Brown butter mixed with peanut butter in a bowl.
Peanut Butter Blondie batter in a bowl.
A bowl of blondie batter with chopped peanuts and chocolate chips being stirred in.

How to Make Peanut Butter Blondies

1. Prep

Preheat your oven to 350 degrees F. Line an 8×8 baking pan with parchment paper creating a sling for easy removal. Lightly coat the parchment with vegetable cooking spray. Set aside.

2. Brown the butter

Heat the butter in a small light colored pan over medium heat. Cook until the butter begins to have a nutty smell and turns amber in color. Remove the butter to a small bowl and add the peanut butter. Stir to combine.

3. Combine the ingredients

Whisk together the flour, baking powder and salt. Set aside. Mix together the melted butter mixture and brown sugar until blended. Add the egg and vanilla and mix well.

4. Fold ingredients together

Using a rubber spatula fold the flour mixture into the peanut butter mixture just until combined. Add the chocolate or peanut butter chips and the peanuts to the batter. Fold in gently until blended. Spread the batter evenly in the prepared pan.

Sprinkle a few more chopped peanuts on top and chunks of dark chocolate.

Peanut Butter Blondie batter ready to go in the oven.
A baking pan filled with baked peanut butter blondies.

5. Bake, cool cut and serve

Bake until the top is puffed, shiny, cracked and light golden brown, about 22 to 24 minutes. Don’t over-bake! Blondies should be chewy, not crisp.

Cool the blondies in the pan then lift out using the parchment paper as a sling. Transfer to a cutting board and slice into small squares. Enjoy!

An overhead shot of peanut butter blondies garnished with dark chocolate and chopped peanuts.

How to store Peanut Butter Blondies

Blondies can be stored at room temperature for up to 5 days sealed in an airtight container.

Leftovers can be frozen for up to two months. However, these blondies are best served the day they’re made so you can enjoy all that melted chocolate goodness!

Peanut Butter Blondies on a piece of parchment paper cut into squares.

Variations and Add-In’s

I’ve made these blondies several ways over the years and loved them all.

  • If desired you can use all peanut butter chips inside and on top. Peanut butter chips are a little sweeter than bittersweet chocolate so be aware.
  • Combine peanut butter chips and bittersweet chocolate chips for the best of both worlds.
  • Any kind of peanut will do but we prefer a lightly salted, roasted peanut for this recipe. Be sure to save some for a garnish.
  • Milk chocolate chips are also sweeter than bittersweet but go great with peanut butter flavored desserts.
  • Don’t skip the chopped chocolate on top. It adds a nice visual feature but also great chocolate flavor.
  • For a super rich dessert top each square with a small scoop of ice cream or a drizzle of caramel.
Peanut Butter Blondies cut into squares garnished with dark chocolate and chopped roasted peanuts.

Peanut Butter Blondies

Prep Time: 15 minutes
Cook Time: 22 minutes
Total Time: 37 minutes
Yield: 16
Course: Dessert
Author: Tricia
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5 from 6 votes
Chewy, buttery and loaded with peanuts and dark chocolate our Peanut Butter Blondies are a simple and delicious treat for the peanut butter lover in your life!

Ingredients

  • 4 tablespoons unsalted butter browned and cooled (56g)
  • 2 tablespoons creamy peanut butter (33g)
  • ¾ cup all-purpose flour (100g)
  • ½ teaspoon baking powder
  • ¼ teaspoon salt
  • ¾ cup packed light brown sugar (170g)
  • 1 large egg
  • 1 teaspoon vanilla
  • ½ cup peanut butter chips or bittersweet chocolate chips (90g)
  • ½ cup salted roasted peanuts rough chopped (2 1/4oz or 65g) plus extra for garnish
  • 2 ounces dark chocolate bar chopped or chocolate chips for garnish

Instructions

  • Preheat oven to 350℉.
  • Cut a length of parchment paper to fit a 8×8 baking dish allowing the paper to come up to the top of the pan on both sides. Cut another sheet to fit in the opposite direction also trimming at the top of the pan. Spray the parchment paper lightly with cooking spray. Set aside.
  • In a small light colored pan over medium heat, melt the butter stirring occasionally. Cook the butter until it begins to have a nutty smell and turns amber in color. Do not overcook as it will burn easily. Remove the browned butter to a glass bowl or cup. Stir in the 2 tablespoons peanut butter and set aside to cool.
  • Whisk ¾ cup flour, baking powder and salt together in a small mixing bowl. Set aside.
  • Combine the browned butter and brown sugar until blended. Add the egg and vanilla and mix well. Fold the dry ingredients into the butter mixture just until combined. Do not over-mix.
  • Add the peanut butter or chocolate chips and the peanuts to the batter. Fold in gently. Spread the batter evenly in the prepared pan. Sprinkle a few more peanuts on top along with chunks of dark chocolate if desired.
  • Bake until the top is shiny, cracked and light golden brown, 22-24 minutes. Do not over-bake. Blondies should be chewy, not crunchy.
  • Cool the Blondies in the pan then lift out using the parchment paper as a sling. Transfer to a cutting board and slice into bite sized squares. Enjoy!

Recipe Notes

Store blondies at room temperature in an airtight container for up to 5 days.
Nutrition information is calculated using an ingredient database and should be considered an estimate. When multiple ingredient alternatives are given, the first listed is calculated for nutrition. Garnishes and optional ingredients are not included.

Nutrition

Calories: 150kcal | Carbohydrates: 18g | Protein: 3g | Fat: 8g | Saturated Fat: 3g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.1g | Cholesterol: 18mg | Sodium: 86mg | Potassium: 97mg | Fiber: 1g | Sugar: 11g | Vitamin A: 104IU | Calcium: 27mg | Iron: 1mg

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If you like peanuts and peanut butter (like we do), then you’ll be thrilled with this delicious Peanut Butter Blondie recipe. They’re super easy to make, have a lovely chewy texture and a wonderfully salty crunch from the peanuts. Enjoy!

Originally published January 2016, updated March 2024

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28 Comments

  1. soom

    5 stars
    QUESTION: can a blondie recipe also be made into drop cookies rather than pan bars successfully?
    Do you have to alter the wet to dry ingredient ratios? THANKS.

    Reply

    • Tricia Buice

      Hi Soom. I have not tested this recipe as a cookie so I cannot say for sure. I agree that the flour would have to be increased but I don’t know the exact amounts. I have a very good peanut butter cookie recipe you might like to compare and perhaps add chopped chocolate to instead of altering the blondies recipe. Good luck!

      Reply

  4. Susan

    Wow, I wish I had some peanut butter chips hanging around my pantry to make these. I’ll bet my grandsons would love them too. Better add PB chips to the grocery list 🙂

    Reply

  5. Wendy

    I love blondies + I love peanut butter = I love these Peanut Butter Blondies! If one must justify eating a treat in January (before all resolutions are forgotten) then think of all the excellent protein the peanuts and peanut butter provide here! 😉 Thanks for the recipe, Tricia. Have a great weekend!

    Reply

  13. Monica

    Tricia, this is bound to make any peanut butter lover happy…count me in!! I would be so satisfied with a piece of this for dessert. And your Christmas goodies sound amazing…those were lucky and happy recipients, I’m sure. Have a great weekend ahead!

    Reply