Peanut Butter Blondies Recipe

Karly Campbell | Buns in my Oven

Peanut Butter Blondies will make any peanut butter love jump up and dance. Tons of Reese's Pieces throughout will make anyone smile.

I want to jump right in and start talking to you all about how amazing these gooey peanut butter blondies are, but I can’t.

Peanut Butter Blondies Photo

I want to tell you how even though I’m never one to choose a blondie over a brownie (I mean, no. That’s ridiculous.), I would probably go ahead and choose THIS blondie over a brownie any day, but I can’t do that either.

The reason I can’t do that is because my puppy is laying next to me and she is sound asleep. I wouldn’t know she was asleep if it weren’t for the weird yips she makes when she’s dreaming.

You see, this dog of mine, this adorable, fluffy, too cute for her own good dog, likes to sleep with her eyes open.

Peanut Butter Blondies Picture

It’s terrifying. Have you ever been eyeballed by a sleeping dog? I hope not. It’s not pleasant.

Half the time I could swear she is dead, except that fat little tummy is bouncing up and down as she dreams. And, yeah, sometimes she snores louder than my husband.

Dogs are weird.

Peanut Butter Blondies Image

There. I just woke her up and now her eyes are closed. Seems legit.

Now I’m free to tell you all about these blondies! Oh, you guys.

They are perfectly peanut butter-y and so, so soft. If you’re a peanut butter lover, then these are the bars for you!

I stuffed them with some Reese's Pieces, because that’s how I roll. You could use chocolate chips or peanut butter chips, peanut butter M&Ms, or chopped peanuts, or nothing at all.

Whatevs. It’s all good.

Peanut Butter Blondies Pic

I used Mark Bittman’s one bowl perfect blondie base as a jumping off point for this recipe from his book, How To Cook Everything. I’m pretty obsessed with that recipe and have been tweaking it here and there in all manner of over the top ways. I’ll be sure to share more soon!

In the meantime, these peanut butter frosted brownies are looking good if you need a chocolate fix. Or good night, how about some chocolate peanut butter pretzel bars? I swear, I do eat dessert that doesn’t contain peanut butter, but I try not to make a habit of it. Heh. 

Planning a dinner party and need some inspiration?

How about looking for a new slow cooker dinner idea?

We’ve got you covered in our ever-growing Facebook group! If you’re not a member yet, why not?!


We’re chatting cooking techniques, dessert ideas, and everything in between. If you’re already a member, invite your friends to join us too!


Peanut Butter Blondies Recipe

    12 Servings


  • 1/2 cup Butter
  • 1/3 cup Creamy Peanut Butter
  • 1 cup Brown Sugar
  • 1 Egg
  • 1 teaspoon Pure Vanilla Extract
  • 1 cup Flour
  • 1/8 teaspoon Salt
  • 1 cup Reese's Pieces


  1. Preheat oven to 350°F.
  2. Add the butter and peanut butter to a small sauce pan set over low heat and melt together.
  3. Once melted, stir in the brown sugar. Let cool for 5 minutes before adding the egg and vanilla. Stir to combine.
  4. Stir in the flour and salt. Stir in the Reese's Pieces candies.
  5. Spread into a greased 8x8 baking dish and bake for 20-25 minutes or until the center is just set. Let cool before cutting into small squares.


Cooking Method:
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Related Recipes:
Bar Dessert Recipes, Dessert Recipes, Baking Recipes, Baked Recipes, Blondy Recipes, Peanut Butter Recipes, Candy Recipes, Party Food Recipes
Recipe Yields:
12 bars
Prep Time:
Cook Time:
Total Time:
Related Post:
Author: Karly Campbell
Recipe Yields: 12 bars
Prep Time: 10 minutes
Cook Time: 25 minutes
Total Time: 35 minutes

Nutrition Facts

Serving Size 1 bar
Servings Per Recipe 12

Amount Per Serving
Calories from Fat 100
Calories 239

% Daily Value*
Total Fat 12g
  Saturated Fat 6g
Sodium 39mg
Total Carbohydrate 29g
  Dietary Fiber 0g
  Sugars 20g
Protein 4g

* Percent Daily Value are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Nutrition Facts are estimated based on ingredients and data provided by Fat Secret. Please consult a doctor if you have special dietary needs.
Karly Campbell

About Karly

Karly cracks us up on her blog Buns in My Oven, and quite regularly stuns with all kinds of recipes. You'll find her passion for baking, especially Bar Desserts and casseroles, here on Food Fanatic.

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