Chocolate Buttermilk Muffins

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Chocolate buttermilk muffins made with buttermilk.  You’ll love this copycat Costco chocolate muffin recipe!

Chocolate Buttermilk Muffins from  -  These taste similar to the giant muffins from Costco and are guaranteed to satisfy your chocolate cravings!My husband recently put us on a cash diet.  Which is worse than a regular diet, if you ask me.

I’ve been fighting his cash diet idea for years, but I finally gave in this year and decided to embrace it.  I put all my cash in neat little envelopes and planned out all my grocery shopping, and headed to Costco.

I don’t know if you know this… but standing in Costco with nothing but cash to spend?… Sucks.  Big Time.

It’s a proven fact that it is impossible to leave Costco having spent less than $100.  It’s also a proven fact that 9.5 out of every 10 people who enter Costco leave with a case of toilet paper.

This week I was purchasing around $20 worth of fruit, and $20 worth of ground beef, (and by the way, $20 worth of fruit takes up WAY more space than $20 worth of meat!) both of which are right next to the famous Costco baked goods section of the store.

Chocolate Buttermilk Muffins from  -  These taste similar to the giant muffins from Costco and are guaranteed to satisfy your chocolate cravings!

You know what I’m talking about.  It’s the section where you buy those giant chocolate muffins that are loaded with chocolate chips, so that you can eat dessert before noon and pretend it’s breakfast.  If I were a conspiracy theorist, I would believe that Costco wanted me to be carb addicted.

Well, I have news for you, Costco.  I was carb addicted long before I met you.

The aforementioned cash diet forced me to part with my beloved chocolate muffins, but I figured there was no reason on earth I couldn’t recreate them with ingredients I already had on hand at home.  Happy Dessert-Breakfast to me.

Chocolate Buttermilk Muffins from  -  These taste similar to the giant muffins from Costco and are guaranteed to satisfy your chocolate cravings!

And, I know I’ve said this a million times, but I have a hard time letting an opportunity go by to describe my love affair with buttermilk.  I recently made these Coconut White Chocolate Buttermilk Scones, which were beyond delicious, and I’ve been dreaming of my great-grandmother’s Chocolate Frosted Buttermilk Cookies lately, and oh, I’ve been dying to share my Vanilla Cupcakes with you.  Because they’re made with buttermilk.

I made my batch late at night, after the kids had gone to bed.  This turned out to be a brilliant idea, because I got to eat a warm muffin right out of the oven, totally alone and undisturbed.

Also, I think this is the first batch of muffins I’ve made in a year that has lasted longer than 6 hours.
Mom Blog to Money Blog

sconesCoconut White Chocolate
Buttermilk Scones
Diet Cherry Cola CupcakesDiet Cherry Cola
chocolate cake recipe9 Minute Microwave

4.2 from 11 reviews
Chocolate Buttermilk Muffins
Cook time
Total time
A rich chocolate buttermilk muffin with chocolate chips.
  • ⅓ cup vegetable oil
  • 1 cup buttermilk
  • 2 eggs
  • 1 tsp. vanilla
  • ½ tsp. salt
  • 1 tsp. baking soda
  • 2 tsp. baking powder
  • ½ cup sugar
  • ¼ cup brown sugar
  • ¼ cup cocoa powder
  • ¼ cup dark cocoa powder (Hershey's Special Dark)
  • 2 cups flour
  • 1 cup chocolate chips
  1. Mix ingredients in order.
  2. Fill muffin cups ⅔ full. Bake at 350 degrees for 18-20 minutes.


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  1. Jen I am in love with the idea of these! The oil (not butter) – so they stay moister, and the buttermilk (yes!) and the chocolate – I am sold! They look incredible and gorgeous food styling, too!

  2. I love muffins and these look very delicious. Cash diet- I have similar post on my blog
    Greetings Malgorzata

  3. Yes, Jen, you ARE my super hero for making such a decadent “breakfast” delight (which I think I could eat all day long). I always take my husband to Costco so HE can pay…that way I get to buy more. I saw this fabulous post over at “Metamorphosis Monday” blog party.

  4. I ALWAYS overspend at Costco, which is why I generally refrain from going. I love baking with buttermilk too and I’m so excited to print out all your buttermilk recipes because I’ve got a carton of it sitting in my fridge as we speak. It was fate that I’d read this post today. These muffins look glorious – who needs to buy them when you can make them?

  5. Donna Howard says:

    Yum – can’t wait to make them. But your hubby is a fan od Dave Ramsey!!!

    • Thanks Donna! He loved the cash envelopes before he knew anything about Dave Ramsey, but you’re right, he’s a big fan! (So am I!)

  6. Oh wow. These look fabulous. I bet they taste way better than the Costco ones. You are being featured tonight at the Back for Seconds Social, Congrats!!

  7. omg, i have been looking for a recipe for costco chocolate muffins for like EVER! i made some a few years ago and they didnt compare, so i gave up hope :( question….would it be ok to just use regular cocoa powder? i have had a love affair with hershys dark chocolate cocoa powder but in the last year have been unable to find it at any of my local stores (which arent many) thanks!

    • Jess, I’m sure the regular cocoa powder would be fine. Let me know how they turn out, this is my favorite muffin ever!

  8. I am a huge muffin fan, and these look amazing! Love putting buttermilk in muffins!

  9. These were not as good as I was expecting unfortunately and I think people should only leave a comment if they have made the recipe not on ow it looks…

  10. I just baked these muffins I added more choc chips I used white and dark turned out amazing ! Best recipes ! Thanks for sharing !

  11. Oh, I so want this. It wouldn’t be sacrilege to use just regular cocoa powder, right? We haven’t got the dark cocoa powder variety here. I’ll be overloading these with so much chocolate chips they’ll come out of my hears. 😀

  12. I stumbled upon this when browsing Pinterest.

    This is THE BEST Chocolate Chocolate Chip Muffin recipe I’ve tried, and I’ve tried a handful while looking for the perfect one!
    Thanks so very much for sharing, this preggo lady really appreciates a “healthy” chocolate fix. :)

  13. It looks great; I was just wondering how many muffins the recipe yields…

  14. I just made these and I am so bummed to report that these were horrible, dry muffins! I followed the recipe exactly and these are nasty! I’m going to make a fudgy chocolate buttercream frosting to throw on top and pray that makes them taste better…then they’ll be muffin cupcakes. Fingers crossed…

  15. Muffins were awesome, made the recipe several times it’s now my “go to” muffin recipe

  16. I’ve just made these and WOW! They are delicious! They are moist and chocolatey and the right mix of dense and fluffy. I didn’t have dark cocoa powder so used half cocoa and half cacao. I also used half grapeseed oil and half macadamia oil after having had a good experience using macadamia oil in muffins previously. When I mixed my muffins together I first prepared all the dry ingredients and had them mixed together in a bowl and then added the mixed wet ingredients into the dry until they were just combined. I had enough mix for 12 medium sized muffins and 12 mini muffins. I added extra choc chips to the tops of the minis. I preferred the bite-sized mini muffins overall. Great recipe – thank you!

  17. The muffins looked chocalatey but I don’t like dense texture. Otherwise it will be perfect.

  18. Hi :)

    A few questions…
    1) How man muffins does this make?
    2) Are they regular-sized or Jumbo-sized like the Costco ones?

    Can’t wait to make these for my family/friends!

    • Sophie, I don’t know why I didn’t include a yield in the recipe card. It’s been quite a while since I made them, so I don’t remember exactly, but I’m assuming it makes 12-18 regular sized muffins. If you want something extra large, like they sell at Costco, you will need to find a muffin pan with extra large cups, and then both increase the baking time and decrease the temperature. Next time I make a batch, I’ll update the recipe card!

  19. These are super duper! And I don’t even like muffins, I just make them for the kids. But I want to inhale all of these.

    I used spelt flour so we can pretend they are super-super healthy, right? 😉 and slightly less sugar because I was out of brown sugar. Instead of adding more white I just skipped that amount.

    Betting the kids and husband eat all of these today. And now I’m out of cocoa!

    • Still making these! Half the recipe makes 24 cute little mini muffins. Just made some whilst everyone is still asleep. I suspect they will not last long! They take about 10-12 minutes to cook the smaller sized mini muffins. Yum.

  20. I made these yesterday and then again today because they were so good that I needed more. Thanks for sharing such a great recipe.

  21. Sasha Bliss says:

    I just made those and they were wonderful! They were very moist and dense! My kids loved them! I will definitely make them again. Thank you!

  22. Just made these yesterday and they were DELICIOUS. So close in flavor/texture to the Costco chocolate chip muffin. I baked mine in dark muffin tins, so I probably should have put them in for 16 minutes to start. Even though they’re just the teensiest bit dry, I think the recipe is a real winner!

  23. BakerK says:

    These were sound, flavor-wise, but I got the same results as Meghan above – ridiculously dry. They’re too ‘muffiny’ for icing, so it’s wash this batch down with lots (and lots) of milk and see if I can find another copycat Costco muffin recipe.


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