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If you’re a peanut butter lover, these Peanut Butter Blondies are about to become your new favorite dessert. Rich, chewy, and packed with nutty flavor, these bars are like the perfect cross between a cookie and a brownie — but even easier to make.

Made with simple pantry ingredients like peanut butter, brown sugar, butter, and flour, this recipe comes together quickly and bakes into soft, golden bars with crisp edges and a fudgy center. Each bite delivers the irresistible combination of sweet caramelized brown sugar and creamy peanut butter.

Why You’ll Love This Recipe

There are so many reasons these peanut butter blondies are a favorite among home bakers:

  • Super easy to make
     The batter mixes together in just one bowl.
  • Perfect chewy texture
     Soft centers with slightly crisp edges.
  • Loaded with peanut butter flavor
     Every bite is rich and nutty.
  • Customizable
     Add chocolate chips, peanut butter chips, or nuts.
  • Great for sharing
     Perfect dessert bars for gatherings and bake sales.

Ingredients You’ll Need

These blondies use simple ingredients you may already have in your kitchen.

Main Ingredients

  • ½ cup unsalted butter, melted

  • 1 cup creamy peanut butter

  • 1 cup brown sugar (packed)

  • 1 large egg

  • 1 teaspoon vanilla extract

  • 1 cup all-purpose flour

  • ½ teaspoon baking powder

  • ¼ teaspoon salt

Optional Add-ins

  • ½ cup chocolate chips

  • ¼ cup chopped peanuts

  • peanut butter chips

  • sea salt flakes (for topping)

How to Make Peanut Butter Blondies

These bars come together in just a few simple steps.

Step 1: Prepare the Baking Pan

Preheat your oven to 350°F (175°C).

Line an 8×8-inch baking pan with parchment paper or lightly grease it.

This makes it easier to lift the blondies out after baking.

Step 2: Mix the Wet Ingredients

In a large mixing bowl, whisk together:

  • melted butter

  • peanut butter

  • brown sugar

Mix until smooth and creamy.

Add the egg and vanilla extract and continue mixing until fully combined.

Step 3: Add the Dry Ingredients

Stir in:

  • flour

  • baking powder

  • salt

Mix gently until just combined. Do not overmix.

If using chocolate chips or peanuts, fold them in at this stage.

Step 4: Spread the Batter

Transfer the batter into the prepared pan.

Use a spatula to spread it evenly across the pan.

Optional: sprinkle a few extra chocolate chips or peanuts on top.

Step 5: Bake

Bake for 20–25 minutes.

The edges should be golden and the center should look set but still soft.

Avoid overbaking to keep the blondies chewy.

Step 6: Cool and Slice

Allow the blondies to cool in the pan for about 20 minutes.

Lift them out using the parchment paper and slice into squares or bars.

Tips for the Best Peanut Butter Blondies

  • Use creamy peanut butter
     Natural peanut butter can make the batter too oily.
  • Don’t overbake
     Blondies continue cooking slightly after being removed from the oven.
  • Use brown sugar
     It gives the bars their chewy texture and caramel flavor.
  • Let them cool before cutting
     This helps them hold their shape.

How to Store Blondies

  • Room Temperature
     Store in an airtight container for up to 4 days.
  • Refrigerator
     Keeps for about 1 week.
  • Freezer
     Freeze for up to 2 months.

Frequently Asked Questions

  • What are blondies?

Blondies are dessert bars similar to brownies but made without cocoa. Instead, they rely on brown sugar and butter for their caramel-like flavor.

  • Can I use crunchy peanut butter?

Yes! It will add extra texture to the blondies.

  • Why are my blondies dry?

This usually happens when they are overbaked. Remove them once the center is just set.

  • Can I double the recipe?

Absolutely. Use a 9×13 pan and increase baking time slightly.

Final Thoughts

These Peanut Butter Blondies are rich, chewy, and incredibly easy to make. With their buttery texture and deep peanut butter flavor, they’re the kind of dessert bars everyone reaches for first.

Serve them warm with a glass of milk or a scoop of vanilla ice cream for the ultimate treat.

Don’t Miss: Chocolate Peanut Butter Ritz Cookies (Easy & Delicious)

Peanut Butter Blondies

Print Recipe Pin Recipe
Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Servings: 9 squares
Course: Dessert, Snack
Ingredients Method

Ingredients
  

  • ½ cup unsalted butter, melted
  • 1 cup creamy peanut butter
  • 1 cup brown sugar (packed)
  • 1 large egg
  • 1 tsp vanilla extract
  • 1 cup all-purpose flour
  • ½ tsp baking powder
  • ¼ tsp salt
  • ½ cup chocolate chips Optional
  • ¼ cup chopped peanuts Optional
  • Peanut butter chips Optional
  • Sea salt flakes Optional

Method
 

  1. Step 1: Prepare the Baking Pan
    Preheat your oven to 350°F (175°C).
    Line an 8×8-inch baking pan with parchment paper or lightly grease it.
    This makes it easier to lift the blondies out after baking.
  2. Step 2: Mix the Wet Ingredients
    In a large mixing bowl, whisk together:
    melted butter
    peanut butter
    brown sugar
    Mix until smooth and creamy.
    Add the egg and vanilla extract and continue mixing until fully combined.
  3. Step 3: Add the Dry Ingredients
    Stir in:
    flour
    baking powder
    salt
    Mix gently until just combined. Do not overmix.
    If using chocolate chips or peanuts, fold them in at this stage.
  4. Step 4: Spread the Batter
    Transfer the batter into the prepared pan.
    Use a spatula to spread it evenly across the pan.
    Optional: sprinkle a few extra chocolate chips or peanuts on top.
  5. Step 5: Bake
    Bake for 20–25 minutes.
    The edges should be golden and the center should look set but still soft.
    Avoid overbaking to keep the blondies chewy.
  6. Step 6: Cool and Slice
    Allow the blondies to cool in the pan for about 20 minutes.
    Lift them out using the parchment paper and slice into squares or bars.