Kirbie's Cravings

Peanut Butter Chocolate Chip Mug Cake

close-up overhead photo of Peanut Butter Chocolate Chip Mug Cake
Creamy, fluffy, eggless peanut butter cake mixed with melty chocolate chips. This single serving mug cake is ready in about 5 minutes.

It’s been a while since I made a mug cake. But it’s really perfect right now. Because even though I’m trying to eat healthy, I still need a little treat. And this single serving cake means I won’t be tempted to eat an entire full-sized cake or a dozen cookies.

photo of Peanut Butter Chocolate Chip Mug Cake
The peanut butter mug cake is one of my favorites. I just adjusted my recipe a little to add melty chocolate. I used chocolate chunks rather than standard chocolate chips since the chunks are bigger. I’m so happy Nestle came out with chocolate chunks so I don’t have to buy them at specialty baking stores.
overhead photo of Peanut Butter Chocolate Chip Mug Cake
This cake is best eaten warm, while the chocolate is still melty and gooey. Because this cake is eggless, the crumb is a little loose. It’s best eaten in the mug as it won’t hold up well if you try to remove it from the mug. So I recommend you just grab a spoon and dig in.
close-up photo of a spoonful of Peanut Butter Chocolate Chip Mug Cake

Here is a video of the recipe too! You can also follow my YouTube page for all the latest recipe videos.

If you enjoy this mug cake recipe, I wrote a whole cookbook on mug cakes: 5-Minute Mug Cakes.* (This is an affiliate link.)

Peanut Butter Chocolate Chip Mug Cake

Servings: 1
Prep Time: 4 minutes
Cook Time: 1 minute
Total Time: 5 minutes
Course: Dessert
Cuisine: American
Single serving creamy, fluffy, eggless peanut butter cake mixed with gooey melted chocolate chips. Cooks in the microwave and is ready in minutes.
4.89 from 34 votes


  • 4 tbsp all-purpose flour
  • 1/4 tsp baking powder
  • 1 tbsp  granulated sugar
  • 1/4 cup  fat-free milk
  • 3 tbsp creamy peanut butter
  • 3 tbsp semi-sweet chocolate chunks or chocolate chips


  • In a microwave safe mug, add all ingredients except chocolate. Using a small whisk, mix vigorously until batter is smooth and no flour chunks remain.
  • Stir 1 tbsp of chocolate chips into the cake batter. Add another 1 tbsp concentrated in the center/middle of the batter (so that when you dig into the center of your cake when it's finished, it has a concentrated amount of chocolate). Sprinkle remaining 1 tbsp on top.
  • Cook in the microwave at full power for about 1 minute. If cake batter is still gooey, cook for an additional 15 seconds. Allow cake to cool a few minutes before eating. Cake is best eaten warm.


  • It is best to eat the cake directly from the mug and avoid removing it from the mug to eat it as the crumb is looser than a traditional cake.
  • If you choose to omit the chocolate chips, you may need to add more sugar to the batter.
  • This cake was cooked in a 1000 watt microwave. If your microwave is wattage is different, you may need to adjust time.

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!


Eggless Peanut Butter Chocolate Chip Mug Cake

Check out my cookbook 5-Minute Mug Cakes,* with nearly 100 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).

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Recipe Rating

135 comments on “Peanut Butter Chocolate Chip Mug Cake”

  1. Thank you for your yummy recipes

  2. Tastes good but so dry! Very crumbly and difficult to eat because of how dry it was. 

  3. This is amazing! Best peanut butter mug cake I’ve ever had! Thank you Kirby’s craving ?

  4. This is the best peanut butter mug cake I’ve ever had! Thank you Kirby’s craving.

  5. I was craving chocolate and peanut butter but didn’t want to make a whole dessert. This was so yummy and hit the spot! I even tried with monk fruit sweetener in place of the sugar and loved it! Thank you.

  6. I used margarine instead of Peanut butter to make it a chocolate chip cake and it was delicious!! It’s so easy, quick and yummy.

  7. This mug cake is incredible, we just love it and have made it a lot! Thank you so much!

  8. This is delicious! Thanks!

  9. So delicious!!!! Exactly what I needed.

  10. Was craving something with peanut butter and chocolate. Scrolled tons of recipes that didn’t sound good then came across this gem. So delish. Exactly what I needed. ?

  11. Very good

  12. This isn’t good. Actually flavorless. Texture is weird. Can people please add salt to their dessert recipes?!

    • If the texture was “weird” you might have under/over cooked it. As far as salt, lots of readers have made it and loved it, but you are welcome to add salt to your taste if you think it needs it.

  13.  It looks delicious it’s probably good I’m going to try it myself and password on 

  14. One of the best mug cakes I’ve eaten! Light and fluffy with lots of chocolate throughout. Not too sweet either!

  15. Hi Kirbie! I’m wondering how many watts your microwave is? Knowing this would help those of us with different sizes make adjustments to the cooking time, without having to continually interrupt the cooking cycle. I ,for one, have a 700w & am constantly having to guesstimate if the recipe doesn’t specify.
    Maybe you could say, for example, “Bake for 1 minute (1100w)” . Thanks for listening!

    • This info is in the recipe card under the notes section: “This cake was cooked in a 1000 watt microwave.” Hope that helps!

  16. Hi. I’m not seeing a calorie count. Please if you can. Also I think it was very good but also quite rich. Besides going down to 2 tbsp chocolate chips and maybe same for peanut butter, any other tips? Also if using the base, any other ideas for different versions?
    Thanks in advance.

    • Sorry, but we don’t have the nutrition information for this recipe – you can copy the ingredients into a free online calculator. There are many to choose from. As far as richness, we don’t have tips for reducing that – because it’s a small serving we like making it a treat 🙂 You might like to browse our other Mug Cake Recipes – we have tons to choose from!

  17. I have been searching for the perfect mug recipe ever since I got the microwave and I hope this is it , I am having for breakfast tomorrow I hope this is it , I am 11 yo and I loooooooove baking. The microwave made me be able to bake what ever I want with out permission, I am excited ? 

  18. THIS WAS SO GOOD! Very nice and creamy! I might add just a tad more peanut butter next time but overall such a great recipe! Would 100% make again!

  19. this is good

  20. We’ve been coming back to this one once a month at least!! It makes a big mug-full. Extra good with a little scoop of ice cream on top, but very decadent all by itself. I use Ghirardelli 60% bittersweet chocolate chips and sometimes do half almond flour.

  21. Thanks! Pretty good for a late night snack 🙂

  22. Do you think PB2 with water or milk could be substituted for normal peanut butter?


  24. This is excellent! Made it gluten-free with cassava flour and rice flour. Came out perfect and satisfying! Thank you!

  25. Yummy delicious ? it was so so very tasty I loved it

  26. Yummy ?

  27. This was the perfect dessert for a single serving. It was super easy to make, moist, and full of peanut butter flavor. Definitely a keeper!

  28. Delicious with oat milk 

  29. It’s a little bitter for my liking and it sorta loses its flavor so I would recommend vanilla and milk chocolate chips.

  30. i use this recipe consistently, but sub 1 tbsp of flour for a vanilla protein powder and occasionally use rolled oats instead of flour to make a heartier breakfast option. as written, or with modifications, it turns out delicious! 

  31. Yay!!! Okay, I haven’t tried this…but I was so against mug cakes because mine always ended up overcooked, eggy tasting, and rubbery. Then, I found a delicious chocolate mug cake recipe on TableforTwo, and I am so excited that this is eggless too! I actually came across your page looking at matcha stuff, but I’m excited to add this to my arsenal of recipes. I know it will be amazing! Like TableforTwo said, why put a whole egg in a small serving of cake when you use like 1-2 eggs for a whole cake. Truly, I’m glad people get it 🙂

  32. !!!! This is SO GOOD!!! I’m a total baking newb, but you gave great instructions and this is the first time I’ve made a mug cake with decent texture! This’ll be happening again! Thank you!

  33. Your recipes are simple and awesome! I’m really bad at making desserts, but your recipes have given even someone like me the confidence. Keep the recipes coming. You are the best!!

  34. Good consistency but not sweet enough. Little salt to bring out the flavor and maybe 2 tbsp of sugar instead of 1.

    • You can definitely add more sugar to suit your personal preference!

    • This recipe actually lives up to the name of cake! I’ve gotten the box mixes at the store, and tried a few recipes and didn’t love any of them. This recipe is good! I feel like it makes the perfect vessel for ice cream or whipped cream, too!

  35. This is by far my favorite mug cake! It gives you a taste of a cookie as well as a cake in one. It gives you room to play around with ingredients and create a different version along with the original recipe! Thank you so much for this recipe ??

  36. This worked great, I had low expectations since these mug cakes tend to work or not. I added some chunky peanut butter for texture, and it was delicious. Thank you for the recipe! 

  37. I had low expectations since I’ve never microwaved cake but this is amazing!

  38. Absolutely delicious! The last time I made it, I substituted one of the tablespoons of flour with whole wheat flour & added a splash of vanilla and a pinch of fine sea salt, and it was wonderful! My go-to mug cake recipe now 🙂

  39. I used white chocolate chips instead and it was delicious. This is a great recipe!

  40. can i use something instead of egg??

  41. Can I make this without the baking powder? Is there a substitution

  42. It was one of those nights that my mom and I were beige watching cooking shows and felt our sweet teeth begin to kick in. I found this recipe and it was amazing, I did use milk with fat in it and it didn’t seem to effect it. If your just having a lazy kind of night and craving a delicious sweet, I highly suggest this recipe!

  43. Far superior to any mug cakes I’ve ever tried before! I’ve made it a dozen times and find it perfect for sweet cravings when I’m short on time. Today I used chopped Hershey bar in place of chips and it was delicious!

  44. This was the perfect recipe to curb my sweet tooth after dinner. Cake came out moist and perfectly cooked after 1 minute in the microwave. Loved it!

  45. This was perfect…. Just what I was looking for to kill the craving! ? And it only took a mug, a spoon, a measuring cup, and 4 mins instead of 30 mins and a sink full of bowls and baking utensils! Thanks so much for this!

  46. I’m a bit lactose intolerant so made this with kahlua in lieu of milk-made for an awesome substitution!

  47. This is honestly my go-to for a late-night sweet fix! It’s so easy and you only have to do some simple swaps and it’s vegan too, which is awesome. Totally love this! 

  48. This recipe was soooooo good. I was out of chocolate chis but still craving chocolate so I put a tablespoon of Nutella in the middle. The Nutella melted and made a molten chocolate center. This is my go-to recipe for breakfast. (Dont laugh i usually have sweets for breakfast)

  49. This is my favorite mug cake! I change it up by adding jumbo chips to the batter and using brown sugar instead if regular sugar. Frekaing fabulous!!

  50. I’m doing keto and this popped up in my search for a mug cake. I subbed almond milk, almond flour, used stevia and sugar free chocolate chips. Came out fabulous!! Thank you.

  51. You’re blog is the best place to find mug cake recipes. They always turn out so well xx If I wanted to add cocoa powder to this recipient should I adjust the liquid or the powder ingredient. I’m not much of a home made baker, recipes are my best friend haha!

  52. These look so awesome! Perfect dessert for tonight’s supper. My microwave is broken tho.. Possible to bake these?

  53. Can this recipe be used with gluten free flour ( King Arthur measure for measure)?

  54. Hubby was in the mood for something sweet so I made this for him and he’s really picky. He loved it!! 

    Let’s say I want to add an egg, would you suggest adjusting any of the other ingredients?

  55. This is my new favorite mug cake! I cut the recipe in half to keep the calorie count down and used cashew milk…SO GOOD. I love that this is an eggless recipe, so it’s okay if it’s a tiny bit undercooked, leaving pockets  gooey deliciousness 🙂

  56. This was sooo good! Made it in my new Pampered Chef Ceramic Egg Cooker. Cooked for 1 minute then kept checking at 20 second intervals totaling 2 minutes.

  57. This is the best mug cake recipe ever! I tried it and it was amazing! Thank you!

  58. how many calories for the peanut butter chocolate chip mug cake

    • I’m sorry but I do not currently have the nutritional information for this recipe. There are several websites that do allow you to input a new recipe and it will calculate nutrition data.

  59. Could whole milk be used instead of the fat free milk? I am unable to digest anything that is fat free.

  60. Made two of these last night for my husband and I. I was in the mood for cake after dinner, so this was perfect! Used chocolate chips and the rest as listed. It was sooo yummy! Will definitely make again when the craving strikes.

  61. Delicious! I usually make the chocolate chip cake but I was out of brown sugar. I think this is my new go too. Top it with some vanilla ice cream to increase the yum!

  62. Sooo good!

  63. I was searching pinterest for a quick peanut butter mug cake, and found this one. It was perfect! Exactly what I was looking for!

  64. I’m Valerie- a content creator for Reasons to Skip the Housework. We’d love to feature this post in an upcoming Mug Cake roundup. We would use one photo with a prominent link back to this post (no recipe). Please let me know if you’d rather we NOT feature you!