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Stack of Peanut Butter Truffle Brownies on a white dessert plate

Peanut Butter Truffle Brownies

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These Peanut Butter Truffle Brownies combine that irresistible pairing of chocolate and peanut butter in a most delicious, irresistible way! Brownies are topped with a peanut butter truffle filling then finished off with a silky ganache topping.

You can put those Reese’s Peanut Butter Cups back in the bag for now and indulge in these marvelous peanut butter brownies instead!

Peanut Butter Truffle Brownies on a white ceramic tray

Peanut Butter Truffle Brownies

I first made these peanut butter brownies back in 2011 for a weekend reunion with some fabulous friends from college. These were those sorority sisters with whom I ate bags of chips and M & M’s. We also were known to make nachos in the sorority microwave after coming home late from the bars. I knew they’d be perfect for our tailgate.

Cut into squares and packed up in a cooler, these peanut butter truffle brownies made their way across three states to a homecoming football game at my alma mater. I paid about as much attention to the game that day as I did in college. The hubby is still shocked I went to the Rose Bowl and Peach Bowl back in the day, too.

Stack of Peanut Butter Truffle Brownies on a white dessert plate

Tips for Making These Peanut Butter Brownies

As with every recipe, read through the instructions before starting to familiarize yourself with the procedure. Also double check that you have all the ingredients on hand.

  • Usually I pull out the butter and eggs before I start baking. Since part of the butter is melted in the microwave, only the butter for the filling and the eggs need to be brought to  room temperature.
  • For both the brownie batter and the peanut butter filling, I use an offset spatula to spread each layer out evenly. This makes for a prettier presentation.
  • The first time I made this recipe, I used a bag of semi-sweet chocolate chips for the ganache topping. Since then, I’ve found I like the way Ghirardelli chocolate bars melt better than chocolate chips.
  • Feel free to use 12 ounces of either chocolate chips or chocolate bars. If you use the chocolate chips, you may need to add 2 tablespoons of cream to the mixture.
  • As with most of my brownies and bars, they cut best after some time in the refrigerator. Use a warm, dry knife to easily slide through the ganache topping and wipe the knife off between cuts.
  • For more details, check out my post on How to Cut Perfect Cookie Bars.

More Peanut Butter Desserts You’ll Love:

Better Than Reese’s Peanut Butter Bars, Stuffed Peanut Butter Rice Krispie Treats, Frozen Chocolate Peanut Butter Pie, Tagalong Cookie Bars, and No-Bake Chocolate Peanut Butter Cookies are some other ways I get my chocolate peanut butter fix!

I spotted many decadent versions of these peanut butter brownies across the Internet, and I’ve pieced together a few recipes and added my own twist.  My fabulous friends from college adored these layered peanut butter brownies—they were inhaled!!

These little gems are outrageously rich and delicious. If you like Reese’s, you’ll have to try a batch of these peanut butter truffle brownies.

Note: These brownies were first shared in 2011. The photos and text were updated in 2019.

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Peanut Butter Truffle Brownies stacked on a square white plate

Peanut Butter Truffle Brownies

Rich, fudgy brownies topped with peanut butter truffle filling and iced with chocolate ganache!

  • Author: Liz
  • Prep Time: 30 minutes
  • Cook Time: 30 minutes
  • Total Time: 1 hour
  • Yield: 24 brownies 1x
  • Category: Dessert, Brownies
  • Method: Mixing, Baking
  • Cuisine: American

Ingredients

Brownies:

  • 1 cup butter
  • 2 cups sugar
  • 3 eggs
  • 1 tablespoon vanilla
  • 2/3 cup cocoa powder
  • 1 cup flour
  • 1/2 teaspoon salt
  • 1/2 teaspoon baking powder

Peanut Butter Filling:

  • 1/2 cup butter (at room temperature)
  • 1/2 cup creamy peanut butter
  • 2 cups powdered sugar
  • 23 teaspoons milk

Ganache Topping:

  • 2 cups semi-sweet chocolate chips
  • 1/4 cup 1/2 stick butter
  • 2 tablespoons shortening
  • 2 tablespoons heavy cream, optional (I suggest adding if using chocolate chips)

Instructions

  1. Preheat oven to 350º. Put a long piece of non-stick foil or parchment in the bottom of a 9 x 13 inch pan, fitting so it covers the bottom of pan, the two shorter sides, plus has some overhang on each side for easy removal. If using foil, spray non covered sides of pan with nonstick spray. If using parchment, spray entire inner surface of pan with nonstick spray.
  2. In a large microwave safe bowl, melt the 1 cup butter in the microwave. Mix in sugar, then eggs and vanilla. Sift the cocoa powder into the egg mixture, along with the salt and baking powder. Mix well. Add flour and mix till just combined. Scrape into prepared pan and smooth top.
  3. Bake for about 25-30 minutes. Cool completely.
  4. While the brownies are cooling, mix together filling ingredients. Beat until smooth adding the extra teaspoon of milk if needed. Mixture should be spreadable. Spread filling evenly over cooled brownies. Chill for at least 30 minutes.
  5. While the filling is cooling, make ganache by melting the chocolate chips, butter, shortening and cream (if using) together gently in the microwave. Stop and stir at 30 second increments, till melted and smooth. Put dollops of ganache over filling and spread gently. Return to refrigerator to set topping.

Notes

Adapted from Betty Crocker, Loves to Eat and Sweet Pea’s Kitchen

Lambeau has not made an appearance on my blog in a while, so to celebrate Halloween, I present her as Moammar Gooddoggi:

Isn’t she a good sport???  Do you want to guess on the number of marshmallows it took to bribe her into posing? LOTS!

Note: This post may contain affiliate links; view my Disclosure Policy for details. I earn a small percentage from any purchase you make by clicking on these links at no extra cost to you.

96 comments on “Peanut Butter Truffle Brownies”

  1. Those look awesome. Peanut Butter + Brownies = Heaven!

  2. Lucen impresionantes y muy original,felicitaciones,abrazos grandes hugs,hugs.

  3. Lizy, thank you for finding my x-mas gift for my father-in-law! I will be his most favorite of all this year! These are outstanding. Your dog is such a good sport!

  4. Rich and decadent – I’m sold! These sound like such a fantastic treat.

  5. These look simply divine! Another great recipe…..

  6. Congratulations on Toop 9!

  7. I agree: this brownies look yummy! But what size pan does one use? It’s not specified in the recipe. 9×13? 8″ square? Thanks for clarifying this.

  8. Oh, man. I am salivating at work, yet again. These look absolutely perfect!
    And congrats!

  9. Congrats on the Top 9 today, #1!!!!

  10. These look incredible!!

  11. Love the costumes – so adorable! Love the brownies too – they look awesome.

  12. Congrats,Dear!:)

  13. Congrats on #1!! These brownies sure are worthy of the top spot. They look magnificent!

  14. Haha your puppy gave me a much needed laugh today. Thank you for that!

    Your brownies look…amazing!

  15. Bravo on No1 and no wonder – they look fabulous, Lizzy. Amazing what I’ve missed in 2 days already. Too funny with your lovely doggie: he is definitely cool in your sunglasses.

  16. Whoa….my son would LOVE these!

  17. NY Baker…sorry for my omission! These are baked in a 9 x 13 inch pan.

  18. I saw these on Food Buzz and had to rush right over, congrats! I am still chuckling over your dog, I can’t decide which one is best, they are all hysterical. You are the next Wegman!

  19. It looks delicious! I have to try!
    Thanks for sharing!.
    Begoña

  20. Those peanut butter truffle brownies and Moammar Gooddoggi are both adorable! 🙂

  21. Those peanut butter brownies are impressive!! They looks great and I love the photos!

  22. OK so how cute is this? Moammar Gooddigi, too funny! ANd as for the brownies… what can be said about perfection in confection? Seriously yummy, Lizzy, most well deserved Top 9!

  23. Well, there is no question whether or not I will be making these! I just love Lambeau!

  24. These sound amazing! Three layers of awesome!!!

  25. Oh my, that looks like a dream dessert – quite a bit of work but impressive. Your doggie is very patient with all the dressing up – too funny!

  26. Aw! She was a excellent sport! Too bad she couldn’t have one of these delicious cookies as a compensate.

  27. Very stylish dog. You maintained to get away with just chocolate buttons, fortunate. I would have requested for at least a group of the PB truffles

  28. Heaven. I’m all about these brownies

  29. You’ve never failed to entice me with your treats, Liz! xoxo 

  30. These brownies are fit for the queen 🙂 Luscious, and so tempting!

  31. These are the ultimate brownies for sure 

  32. Too bad I can’t reach through the PC screen and grab a bite! L 😛 L

  33. Mouth is watering, can’t wait to make these again!

  34. I have been looking for a recipe close to what my Grandmother would make for my birthday. I think this one is going to be close!

  35. I might drive across 3 states to have one of these. Probably two. Delish! 

  36. These look just heavenly! the layers look so creamy and delicious! Peanut butter and chocolate are one of my favorite combinations. If it’s in the house – it’s devoured!

    Lambeau looks so adorable in her costume. LOL Moammar Gooddoggi and that wig – spot on!

  37. Oh, la la, Liz! Truffles, brownies, and peanut butter, woo hoo! They look and sound delicious, perfect for Valentine’s Day! Happy Day to you and thanks for the recipe!

  38. Bring on the truffle brownies, these look heavenly!

  39. No heat when I got home, boiler acting wonky… SERIOUSLY need one of these brownies!!! And aw, the pics of Lambeau make me smile:@) Need an Izzy update!

  40. PB and chocolate for the win! These bars are stunning. I would not be able to stop at 1!

  41. These brownies look amazing! Reese’s pale by comparison.

  42. Oh my,vI might have to invent a moment to make these! We have plenty of Reese’s lovers in our house! And it was so nice to see Lambeau again. Bittersweet, I know.

  43. I’m a Reese’s Peanut Butter Cup fan so these work for me.

  44. Oh my, I think I would become addicted to these beauties. 

  45. This wonderful recipe takes me back to FoodBuzz!

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