Kirbie's Cravings

4 Ingredient Cookie Butter Mug Cake

a close-up photo of 4 Ingredient Cookie Butter Mug Cake

This fluffy, single serving cake is made with creamy cookie butter spread.

Next to Nutella, my favorite spread is cookie butter. Made of speculoos cookies, a crunchy European spiced biscuit cookie, the spread is similar to peanut butter except flavored with speculoos cookies. There are several versions available in the US including a popular version created by Trade Joe’s, though I’m partial to the original Biscoff spread.
4 Ingredient Cookie Butter Mug Cake with a biscoff cookie
I ate a lot of cake this weekend. A lot. So it seems fitting that I’m sharing a cake recipe with you on this Monday morning.
process photo collage showing the cookie spread and what the cake looks like after it's baked
I actually created this recipe nearly a year ago, when I was writing my 5-Minute Mug Cakes*. In the end, the recipe was not put in the book because we ran out of space. I’m a little sad it wasn’t in the book, though I understand why. But now you guys get to enjoy this recipe.
a close-up photo of cookie butter mug cake
This cake comes out fluffy, moist, tasting of caramel and spices. I love the caramel brown color of the spread and how it remains such a beautiful shade of brown in the final cake version as well.

I will note, the crumb of this cake is looser than some of my other mug cakes. Yes there is a way to tighten it up, but it involes adding more calories to the cake, and cookie butter isn’t exactly diet food, so I didn’t want to overdue it with this cake. It’s definitely not a cake you can dump out of your mug to eat. It’s best eaten in the mug, with a spoon. Enjoy!

P.S. If you like this recipe, check out my cookbook* of nearly 100  mug cakes!

photo of 5-minute mug cakes cookbook

More Recipes

*Some of the links contained in this post are affiliate links. Much like referral codes, this means I earn a small commission if you purchase a product I referred (at no extra charge to you).

Cookie Butter Mug Cake

Servings: 1
Prep Time: 4 minutes
Cook Time: 2 minutes
Total Time: 6 minutes
Course: Dessert
Cuisine: American
This fluffy, single serving cake is made with creamy cookie butter spread. I will note, the crumb of this cake is looser than some of my other mug cakes. It's best eaten straight from the mug with a spoon.
5 from 2 votes


  • 1/4 cup cookie butter spread
  • 4 tbsp nonfat milk (see note)
  • 4 tbsp all-purpose flour
  • 1/2 tsp baking powder


  • In a large, microwave-safe mug, add all ingredients in the order listed. Mix with a small whisk until batter is smooth and no flour lumps remain. Because of the spread, this batter will be a little stiff to mix, so you'll need to use a little more strength than some of my other mug cakes.
  • Cook in the microwave for about 1 minute and 20 seconds or until cake is cooked. The cake will initially rise while cooking and will deflate slightly once it is removed from the microwave. Let cake cool a few minutes before eating.


  • I like nonfat milk, but you can use low-fat or whole milk if that's what you prefer.

The nutrition information provided are only estimates based on an online nutritional calculator. I am not a certified nutritionist. Please consult a professional nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.

Did you make this recipe?I'd love to see it! Mention @KirbieCravings and tag #kirbiecravings!


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Recipe Rating

51 comments on “4 Ingredient Cookie Butter Mug Cake”

  1. AMAZING!!!! This is the only time I’ve ever commented on a recipe post and for good reason! I tried following another YouTubers recipe and my gut said it would work and it turned rubber BUT THIS RECIPE IS PERFECT. It’s so simple there’s no lies or bs this is hands down the best. I put some extra cookie butter on top to melt on top and it was delish. ???

  2. I added chocolate chips on top and microwaved for 10 seconds more, the best mug-cake recipe I have found!!

  3. Can you use almond milk instead of regular milk?

  4. I just received a jar of pumpkin spice cookie butter as a gift and had no idea what to do with it. This recipe with Trader Joe’s pumpkin spice cookie butter is FANTASTIC! It was very soft and smooth and not too sweet. VERY pumpkiny. Great easy recipe! 🙂

  5. I just made a half sized portion of this. It was delicious! I only microwaved it for 30 seconds, and it was nice and gooey (more like pudding than cake…just the way I like mug cakes). In case anyone is wondering, I used the Trader Joe’s cookie butter and it worked great. I added a dollop of cream cheese after microwaving it like another reviewer mentioned, and it added this amazing cream cheese flavor which commented the cookie butter really well. Overall, I will definitely be remaking it!

  6. I made the cake as per the instructions in a 1000w microwave. It was very dry. Any suggestions? I measured everything correctly. It was tasty but way too dry.

    • A couple of things: you may want to try reducing cooking time. Just like ovens, microwaves can vary with their cooking power even when they are all 1000w. Another thing is, make sure you measured out a full 1/4 cup of cookie butter and make sure all of it goes into the mug, as it’s easy to leave some of it behind because it’s so sticky. It makes a big difference and too little cookie butter can make the cake dry too. Hope this helps!

  7. Hey, do you think this would work with peanut butter instead?

  8. Top it with a dollop of cream cheese and you will NOT regret it!

  9. Great recipe! Wanted to make it but found out I was out of cookie butter so used Oreo spread instead. Loved the texture of it. Will try it with cookie butter soon!

  10. I was very excited to try this recipe as Lotus cookie butter is my new obsession but I found that it didn’t really taste like lotus cookies and it kind of just tasted like bland cake with a hint of caramel. I melted some cookie butter on top of the cake after it was done and it was DELICIOUS! But still just tasted like a plain cake that someone poured cookie butter on top. 

    • sorry you feel that way! I thought it had a pretty good cookie butter flavor, but it looks like you found a way to make it work for you. Maybe you can try adding a dollop in the middle too before cooking it.

  11. I cannot wait to make this mug cake!  Where do I buy the Biscoff cookie butter?

  12. Definitely one of the better microwave cake recipes I have tried. I found it to have just the perfect amount of sweetness, with a smooth texture. Perfect way to indulge in some cookie butter 🙂

  13. Would you be able to use cookie butter in the 3 ingredient peanut butter mug cake recipe – i.e. make a mug cake with just cookie butter, eggs and sugar?

    • I’ve tried it but I didn’t love it as much as this version. the cookie butter flavor isn’t as strong and it’s a little more eggy tasting

  14. How do you tighten the cake? Just wanted to ask

    • using egg as a binding agent. but you’ll have to adjust the other ingredients as well to adjust for the addition of the egg.

      • What would the recipe be if I want to add egg to make it tighter? What would the new measurements be?

      • Unfortunately, without testing a new version with egg, I can’t tell you what the measurements would be.

  15. I LOVE Cookie Butter! For those of us who don’t mind adding the extra calories, how would you tighten the crumb? I like my cake a little more solid.

  16. I absolutely love your cake! Sometimes I use it with peanut butter if I run out of cookie butter. I also love how to color is like that golden brown. I was just wondering, I have had to put it in the microwave for a longer time just because the cake was a bit doughy.

  17. What is cookie spread. Where would I find it? I live in Australia so they don’t have exactly the same products 

    • I supplied a photo of what it looks like in the post. I’m not sure if you can find it in Australia but it’s from Europe.

  18. I like things extra sweet, but the sweetness of this was enough for me. It complements the delicate cookie flavor. Adding anything else would cover that nice taste. It’s a great recipe, and very satisfying.

  19. 4 Tbl is 1/4 cup, so the recipe could be simplified a little by saying 1/4 cup each of Biscoff Spread, milk and flour, instead of changing to Tbl.

    • You’re definitely welcome to use a 1/4 cup but I actually think the recipe is simpler using a tbsp. if you use a measuring cup, that’s an extra tool you have to wash (spoon for scooping plus measuring cup). I also find it much more accurate using tbsp. It’s hard to get an even surface when using a liquid measuring cup to make sure it’s exactly 1/4 cup. if you use a dry measuring cup, you cant see the bottom to make sure that you have exactly 1/4 full cup.

  20. I’ve made some of the Mug cakes on your blog, and I just got your book. I love it! Your mug cakes are amazing! I’ve told several people about them and your blog. Hopefully they’ll get your book too.

    • Hi Diane! thanks for the kind words and for telling people about my blog! you’re so sweet and I’m so happy you got my book and enjoy the mug cakes!

  21. I liked it wasn’t very sweet. With a little drizzle of vanilla icing, these could make really good breakfast ‘coffee cakes’.

  22. How long to melt plain cookie butter in the microwave – 15 / 20 seconds?

    • yes about 15 seconds should be good, though I think the butter is slick enough that you can make the recipe without pre-melting. Especially if you have a whisk, it should be easy to mix.

  23. Love that this recipe doesn’t add butter or sugar – as they are already in the original cookies.  Thanks for this recipe…

    • I didn’t want to add extra, unnecessary calories! It’s not super sweet, so if you do like yours to be on the sweeter side, you can always add a drizzle of syrup or some frosting

  24. I just made this for an afternoon sugar attack and it was dangerously delicious! It was a little milder in the sweet department but I solved that with a huge scoop of vanilla ice cream. Thanks for the awesome recipe! 🙂

    • it is on the light side of the sweetness department, I should have advised on that. But yeah, ice cream on top sounds delicious. Or maybe some melted cookie butter spread or caramel sauce. Glad it worked out for you though!