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Peanut Butter Whoopie Pies | Taste and Tell

Dear Costco,

I am a huge fan of yours. I have been a loyal shopper for years now, buying everything from chicken to toilet paper to soap. I love that I can buy a big box of laundry detergent that will last me 6 months. Your meat selection is usually better than the meat I can buy at my local grocer, and your store is the first place I was ever able to find real Parmigiano-Reggiano. One time, I tried to buy frozen shrimp at another store – it was a huge mistake, and from now on, you are the sole provider of shrimp in my house.

I now have a request for you – I would like for you to discontinue selling cookbooks. They are my one weakness, and every time I am in your store, I can’t help but walk past that table selling a variety of books. I try to close my eyes as I walk past, but somehow, I always end up in front of them. And when you are selling Martha Stewart’s new cookie book for less than I can buy it on Amazon, without having to wait for it to be shipped to me, all of my defenses are lost and the book ends up in my shopping cart. I am asking you to stop selling these books not because I don’t like the good deals, but because my bank account can’t afford all of these books that have found their way into my cart. And to be honest, my bookcase is now full and can’t handle another book, so I may have to buy a new bookcase to have a place to put my new purchases. It’s just a dangerous cycle that needs to be stopped.

I know that if you discontinue carrying cookbooks, there will still be other places for me to buy them from, but at least one of the temptations will be gone. Thank you in advance for your help and understanding.


A loyal shopper – Deborah

Peanut Butter Whoopie Pies
Prep time
Cook time
Total time
Traditional whoopie pies are given a nutty twist in these Peanut Butter Whoopie Pies.
For the Cookies:
  • 3½ cups all-purpose flour
  • 1½ cups unsweetened cocoa powder
  • 1 tablespoon baking soda
  • 1 teaspoon baking powder
  • 1 teaspoon salt
  • 2 sticks (1 cup) unsalted butter, at room temperature
  • 2 cups sugar
  • 2 large eggs
  • 2 cups buttermilk, at room temperature
  • 2 teaspoons vanilla extract
For the Filling:
  • 1⅓ cup natural, creamy peanut butter
  • 1 cup (2 sticks) unsalted butter, at room temperature
  • 1½ cups confectioners’ sugar
  • coarse salt (optional)
  1. Preheat oven to 400F. Line 2 rimmed baking sheets with nonstick baking mats or parchment paper. Sift together the flour, cocoa powder, baking soda, baking powder, and salt. With an electric mixer, beat butter and sugar on medium speed until light and fluffy. Add eggs, buttermilk, and vanilla. Beat until well combined. On low speed, slowly add dry ingredients; mix until combined.
  2. Drop 1½ tablespoons of batter onto prepared baking sheets, spacing 2 inches apart. Bake until set, about 8 minutes, rotating halfway through. (When the top of a cookie is gently touched, it should feel soft but not wet.) Cool completely on a wire rack.
  3. Make filling: With an electric mixer, beat peanut butter and butter on high speed until smooth. Reduce speed to low. Add confectioners’ sugar; mix until combined. Raise speed to high, and mix until combined. Raise speed to high, and mix until fluffy and smooth, about 3 minutes. Season with salt, if desired.
  4. Assemble cookies: Spread 1 heaping tablespoon filling on the flat side of 1 cookie. Sandwich with another cookie. Repeat with remaining cookies and filling. Cookies can be refrigerated in single layers in airtight containers up to 3 days. Bring to room temperature before serving.
  5. *I find it easiest to put the cookie batter in a piping bad and pipe the cookies onto the baking sheet so that the cookie sizes are more uniform.

Want more Whoopie Pies?

Whoopie Pies on Taste and Tell
Lemon Whoopie Pies on Joy the Baker
Pumpkin Whoopie Pies on Erin Cooks

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56 Responses to Peanut Butter Whoopie Pies

  1. Cakespy says:

    WHOOOOOOOOOOOPIE! These look and sound so delicious! And your “open letter” kind of made me snort I laughed so hard.

  2. Rosa's Yummy Yums says:

    Those Whoopie Pies look gorgeous! Anything with peanut butter will make me drool…



  3. Mary says:

    Oh my those look fantastic! I think my husband let me go beserk in the meat department this weekend at Costco because I zipped by the cookbook table. I didn’t see the Martha Stewart Cookie book at ours!

  4. Patsyk says:

    My mother-in-law just bought that cookbook for me from Costco! I have at least half of it marked to try… now, I see how cool these look I wanna make them, too!

  5. Madam Chow says:

    You and I share a Costco/cookbook weakness. Sigh. I’d better go check out that book!

  6. glamah16 says:

    HA!I plan on using my tax credit to buy a new bookcase to house all my cookbooks. Something needs to be done. I love my Costco. I try to avoid the cookbook aisle and focus on my ‘LIST’.

  7. Katerina says:

    I totally have this weakness too! In fact I almost always let myself buy a cookbook from them and it is so sad cause I have sooo many cookbooks!

  8. Gloria says:

    Deborah these cookies look so well. May you passing by to my Blog I have an Award to you!!!xGloria


  9. Jenny says:

    Hehe, I’m not laughing at you but with you. I recently joined Costco and have very deliberately not gone near the books, knowing my budget would be in danger with every visit!

  10. Dana McCauley says:

    You know, I think whoopie pies might be the one thing I’ve never made.

    Hmmm….future Daring Baker challenge perhaps?

  11. kamailesfood says:

    Ooooh! I love whoopie pies! I’ve never tried PB ones though…I’ll have to make these soon.

  12. Tartelette says:

    I am not allowed near that aisle!! The whoopie pies look wonderful!

  13. Jessy and her dog Winnie says:

    Woopie pies aremy favorite!!

  14. Barbara Bakes says:

    Loved the letter to Costco. My daughter says she can’t cook, but she can Costco. Should I buy Martha’s cookbook – is it a must have for a cookie lover?

  15. Cookie baker Lynn says:

    Oh, I am so with you. Costco is wicked, putting all those lovely cookbooks out. It’s amazing how many manage to jump into my cart.

    And speaking of temptation, what about those cookies you made. How am I supposed to resist whoopie pies with peanut butter filling??? Yummmmm.

  16. Half Baked says:

    I LOVE whoopie pies and peanut butter pies sound awesome!! I want some of those soon:)

  17. Grace says:

    so you’re addicted to buying cookbooks. just thing–it could be much, much worse. at least your addiction results in fabulous concoctions like this.

  18. javagirlkt's cookin' says:

    cookbooks ARE quite addicting!! my bookshelf is overflowing as well.

  19. Barbara Bakes says:

    Less than $10 – I’d been head to Costco!

  20. Gretchen Noelle says:

    HAHAHA! Great letter!!! You know you are welcome to clean out your shelves and send them this way!

  21. My Sweet & Saucy says:

    I definitely agree…costco already tempts us enough with all of their tasters and selling cookbooks for almost pennies is just too much to handle! Delicious looking whoopie pies by the way =)

  22. My Sweet & Saucy says:

    I definitely agree…costco already tempts us enough with all of their tasters and selling cookbooks for almost pennies is just too much to handle! Delicious looking whoopie pies by the way =)

  23. noble pig says:

    Yeah for Costco becuase now we get to look at these! God, these are sinful!

  24. Lisa says:

    Those look so good….I know my son will love them. I’ll have to make them soon!

  25. Sarah says:

    Hehe….that letter made me giggle just a little bit. 🙂

  26. Ginny says:

    Haha! hilarious! and so true! although I’m beginning to think you can never have too many cookbooks! 🙂

  27. Brilynn says:

    You needed to buy this book, it’s awesome! I’ve made two cookies from it so far and that’s just the beginning…

  28. Peabody says:

    I hear you on their shrimp and cookbooks. I almost always leave with both.
    Great looking cookies.

  29. Gigi says:

    You had me at peanut butter! Ha, I just got the book in the mail today! I just love it. I am still deciding on what to bake.

    P.S. the letter was too funny.

  30. giz says:

    Dear Deborah,
    We value you as a loyal customer. We bring in the best of everything just for you. All we want is your happiness. Give us a break – we need to sell the cookbooks and we know you’re a sucker for them – that’s why we put them there :). We love you Deborah.

    Your friends at Costco

  31. Marc @ NoRecipes says:

    I do miss having a Costco membership, but given the amount I was dropping on cookbooks, it’s probably a good thing there are no Costco’s nearby. That whoopie pie looks fantastic!

  32. Kelly-Jane says:

    Oh they are wonderful! Yum yum.

  33. KJ says:

    I have never tried whoopie pies, but I love them anyway, just because of the name. LOL!! I will definitely have to try these.

  34. Astra Libris says:

    I LOVE your letter to costco!! You just made my day! I’m so glad I’m not the only one with a huge, unstoppable cookbook collecting habit… 🙂 but I would argue that you should continue obtaining cookbooks, because, well, look at the results!! Whoopie Pies!! Absolutely perfect, flawless, beautiful ones!! OH MY!!

  35. Dhanggit says:

    whooooooooooooo pie indeed!!! yummy!! your letter made me laugh..we have the same weakness my dear 🙂

  36. Nan says:

    Peanut butter whoopie pies…..hooooha! Two best things in the world = peanut butter and chocolate.

  37. Grace says:

    i know i already commented on this, but they’re still quite lovely, and i tagged you. either you’re welcome or i’m sorry, whichever is fitting. 🙂

  38. April says:

    These look delish!

  39. Steph says:

    Your hilarious Deborah! I agree, Costco needs to discontinue cookbooks, I’ve bought 3 in the last month. Martha Stewart’s cookie book is one of my all time favorites! So many wonderful cookies! I haven’t gotten around to the whoopie pies but it is bookmarked and waiting for me!

  40. Patricia Scarpin says:

    Oh, Deb, you crack me up, sweetie!
    I have been trying not to buy new cookbooks too. Wish me luck, please? 🙂

    These cookies look so good! I want that book too!

  41. Anonymous says:

    I love whoopie pies and i love p-butter…what a perfect match!!

    (btw, i think you and i share the same cookbook “affliction”–they’re hard to resist, aren’t they?)

  42. Suzana says:

    You so made me laugh! I could easily have written such a letter to my local store, and I will have to try those good looking cookies!

  43. Kevin says:

    This peanut butter and chocolate combo sounds really good!

  44. Elle says:

    Three of my favorite things–chocolate, pb, and whoppie pies! Those look so good, and dangerous. hehe.

  45. Medena says:

    Made a grammar mistake the first time : )
    I was not much of a peanut butter lover when I first came to the USA, but slowly I warmed up to it, and who wouldn’t want one of these whoopie pies! My kids love peanut butter (duh, all kids do)!

  46. Kristen says:

    LOL – Costco IS my temptation. I love Costco!
    These look fantastic!

  47. Lina says:

    yes…. cookbooks are my weakness too…
    Your whoppie pies look soo whoopaliscious!

  48. RecipeGirl says:

    I picked up this cookbook in Target yesterday and put it back down again. But I’m going to Costco tomorrow. I know I won’t be able to resist. There’s something about Costco that says, “It’s ok to spend $250 in one shopping trip!” On a sad note, my Costco doesn’t seem to be carrying as many cookbooks these days 🙁

  49. Katie says:

    Ooohh yum! I want one, actually make that about ten! I love peanut butter and chocolate together.

  50. sher says:

    Sigh! I adore Whoopie Pies–and you certainly have them nailed. Gorgeous.

  51. Dharm says:

    That was a funny post! The cookies (Over here we call them biscuits) look so tempting! I love peanut butter too…

  52. tigerfish says:

    You are so funny! I enjoy shopping in Costco too. When I moved temporarily out of the United States, I was missing the pack of frozen shrimps for a while and thank goodness, I found Kirkland Signature frozen shrimps in Costco here. Yes, right here in Costco Asia. Well, not everything is the same but at least they have my fav frozen shrimps!

  53. Shandy says:

    Your whoopie pies look absolutely delicious! I think Costco is a terrific place to obtain cookbooks but I have so many to get to now =D

  54. Rosie says:

    OMG I am seriously drooling here over your stunning Whoopie Pies!! Wonderful bake sweetie 🙂

    Rosie x

  55. Tart Reform says:

    I feel like this is very cathartic, all of us sharing our cookbook weaknesses. I am going to be moving in 2 months, so I have slowly tried to work through and weed down my current cook book collection to make moving day easier. Too many cookbooks, too little uhaul space.

    And the cookies look divine. May have to give these a try too!

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