January 21st, 2014

Double Chocolate Muffins (Costco Copycat Recipe)

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You need to know, right off the bat, that I feel slightly guilty calling these muffins. If you’ve ever had Costco Double Chocolate Muffins, you know what I mean.

Double Chocolate Muffins (Costco Copycat Recipe)

They aren’t fooling anybody. Because these so-called “muffins” are actually rich, moist, chocolate cupcakes….without frosting.

And of course, there’s the fact that they’re made with a chocolate cake mix. It’s a dead giveaway. But if we call them muffins, we can eat them for breakfast, and I’m good with that.

Costco muffins are enormous, so I elected to make mine in a regular sized muffin tin. I will say–and my family agreed–that these do taste very much like the Costco variety.

I like to use mini chocolate chips, but the regular size will work too. Either way, these are some of the tastiest chocolate “muffins” you’ll ever try!

Double Chocolate Muffins (Costco Copycat Recipe)

Preparation 10 mins Cook Time 20 mins Total Time 30 mins
Serves 24     adjust servings


  • 3 eggs
  • 1/2 cup canola oil
  • 1/2 cup milk
  • 1/4 cup water
  • 1 teaspoon vanilla
  • 1 Devil's food cake mix
  • 1 (3.9 oz) package instant chocolate pudding
  • 1/2 teaspoon cinnamon
  • 1 cup sour cream
  • 2 1/2 cups semisweet chocolate chips, divided


  1. Preheat oven to 375 degrees. Line muffins tins with paper liners.
  2. In a large bowl, lightly beat eggs. Mix in oil, milk, water, vanilla.
  3. Stir in the sour cream, cake mix, pudding mix and cinnamon. Mix well. Stir in 2 cups of the chocolate chips.
  4. Fill muffin tins 3/4 full. Sprinkle the remaining 1/2 cup chocolate chips over the batter. Bake for 15-20 minutes or until a toothpick inserted in the center comes out clean.
2 reviews

Who Dished It Up First: Adapted from Your Cup of Cake. For more recipes like this one, follow the Let’s Dish: Breads board on Pinterest.



  1. Can’t wait to try these! I never buy the Costco muffins b/c they are so big (and I would eat it all). Your version looks DELICIOUS!

  2. These muffins look fantastic! I just had a chocolate muffin for breakfast the other day and I told my friend I felt like I just had a piece of chocolate cake for breakfast! I may have to make these for this week!

  3. Looks so good and delicious!!

  4. These look yummy! Pinning it for sure!!

  5. So pretty.

  6. Ah, those Costco “muffins” are totally my fave. This copy cat recipe sounds amazing!! And this way, I can make them in a reasonable sized pan as opposed to the massive ones Costco does. Pinned!

  7. Yes–a Costo muffin in a manageable size. Can’t wait to try them!

  8. I have made these twice in the last 2 weeks and they are amazing! This recipe makes 2 1/2 doz. They’re great for breakfast or a dessert. I heat mine up in the microwave for about 10 – 15 seconds & the choc. chips are so gooey – YUM! Thank you for this delicious recipe!

  9. I just made these and they smell amazing! My daughter had one warm from the oven and thought they were delicious. I can’t handle the sugar in a full muffin so I made 12 muffins and 21 muffin tops. They all came out perfect!

  10. I just finished making these to accompany the poem “If you Give a Mom a Muffin” for our eighth graders to sell at their mother’s day bake sale and I have to confess… I had to try one to validate the incredible smell. So glad I did! They turned out terrific. I used Nestle mini chips as well as some full size dark chocolate chips. I filled the cups to the 3/4+ mark and they came out with a nice little dome on top after 18 minutes of bake time. The recipe made 25 muffins. Thanks for a recipe I am sure to make again (many times).

  11. Haven’t made them yet Doesn’t tell me the calories

    • I’ve made these are they are amazing! Big hit with my adult kids too. I made some full sized muffins and some muffin tops. I’m sugar sensitive and even the muffin tops were too much for me. But, they are delicious!

  12. Yum Danelle! These look so good, and I love knowing just what go into them instead of getting the Costco version. Pinned and stumbled 🙂

  13. If the cake mix already has pudding in it, do we need to add more?

  14. Tried these last night for the 1st time and Oh My Goodness Gracious these are heaven!!! I couldn’t help but try the batter bc ya know I had to make sure they weren’t poisonous our anything 😉 and even the batter was a tasty treat!! Thank you so much for posting this recipe. My family devoured them. The recipe made 30 for me and the instant pudding and cinnamon ifs I think what put it over the top! 🙂

  15. Hope you don’t mind but I am going to share your link on IG. 🙂

  16. Michelle says:

    Great recipe! Just made them today. I used a cup of plain apple sauce instead of oil and eggs. I also used plain yogurt instead of sour cream. They were delicious and very chocolatey.


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