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.
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.
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.
Here is a video of the recipe too! You can also follow my YouTube page for all the latest recipe videos.
Peanut Butter Chocolate Chip Mug Cake
Ingredients
- 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
Instructions
- 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.
Notes
- 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.
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).
Related Recipes
3 Ingredient Flourless Peanut Butter Mug Cake
I used biscoff cookie butter instead and it tasted amazing only thing is that it exploded in the microwave but I changed the recipe plus all microwaves are different so definitely human error lol
Thanks for sharing Kat! Glad it still tasted great even with the mishap!!
This is so good! I was looking for something I could make for a quick treat with peanut butter and chocolate chips and this did the trick perfectly!
We’re so glad you loved this recipe!!
Delicious! I used 1/2 almond flour 1/2 wheat flour, and substituted maple syrup for the sugar. I will use half the chocolate chips in the future. Thank you for sharing this delicious recipe!
So glad you liked it!
I didn’t have PB (I know, who on earth runs out of this staple?!) so I substituted Biscoff Cookie Butter. So good!!
Thank you for sharing such a yummy single-serve recipe!
The cookie butter sounds great! Thanks for letting us know.
was way too dry, maybe needs some melted butter
If it was dry it might have been overcooked. You might want to check your microwave wattage and adjust the cooking time.
Thank you for your yummy recipes
You’re welcome!
Tastes good but so dry! Very crumbly and difficult to eat because of how dry it was.
Sounds like it was overcooked – what wattage is your microwave?
This is amazing! Best peanut butter mug cake I’ve ever had! Thank you Kirby’s craving ?
You’re welcome! So glad you enjoyed it.
This is the best peanut butter mug cake I’ve ever had! Thank you Kirby’s craving.
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.
That’s great it worked with monk fruit!
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.
We’re glad it worked for you!
This mug cake is incredible, we just love it and have made it a lot! Thank you so much!
We’re so glad you loved it!
This is delicious! Thanks!
You’re welcome!
So delicious!!!! Exactly what I needed.
We’re glad you liked it!
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. ?
So glad you enjoyed it!
Very good
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.
It looks delicious it’s probably good I’m going to try it myself and password on
We hope you love it!
One of the best mug cakes I’ve eaten! Light and fluffy with lots of chocolate throughout. Not too sweet either!
So glad you enjoyed it!
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!
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!
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 ?
That’s so great! We hope you have lots of fun making mug cakes – if you want more ideas be sure to check out all of our Mug Cake Recipes 🙂
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!
So glad you loved it!
this is good
We’re happy you liked it!
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.
Thanks for letting us know! We’re glad you love the recipe.
Thanks! Pretty good for a late night snack 🙂
Glad you enjoyed it!
Do you think PB2 with water or milk could be substituted for normal peanut butter?
We haven’t tried it with PB2, but as long as it has a similar texture to regular peanut butter it may work.
DELICIOUS. THANK-YOU
I’m so glad you enjoyed!
Excellent recipe! Super easy, fast, and delicious.
So glad you enjoyed it!
Wow what fun making these recipes! Can’t wait to try them!
We hope you enjoy!
This is excellent! Made it gluten-free with cassava flour and rice flour. Came out perfect and satisfying! Thank you!
Thanks for letting us know!
Yummy delicious ? it was so so very tasty I loved it
I’m so glad you enjoyed!
Yummy ?
I’m glad you liked it
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!
So glad you enjoyed!
Delicious with oat milk
Thanks for sharing that suggestion!
It’s a little bitter for my liking and it sorta loses its flavor so I would recommend vanilla and milk chocolate chips.
Thanks for your suggestions!
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!
Thanks for sharing your adjustments! So glad you enjoy the recipe.
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 🙂
I hope you try some of our mug cakes!
!!!! 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!
I’m so glad it worked out for you!
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!!
thank you for the kind words!
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!
We’re so glad you love it!
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 ??
I’m so glad you like this recipe!
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!
I’m so glad you liked it!
I had low expectations since I’ve never microwaved cake but this is amazing!
I’m so glad you liked it!
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 🙂
Thank you for sharing! I’m so glad you like it!
I used white chocolate chips instead and it was delicious. This is a great recipe!
glad it worked out well for you!
can i use something instead of egg??
there is no egg…
I am a vegetarian person – if I want to make your receipes without egg which ingredients I can use instead of egg ?
there is no egg in this recipe
Can I make this without the baking powder? Is there a substitution
It needs baking powder to rise. I recommend checking out one of my flourless peanut butter mug cakes if you don’t have baking powder. https://kirbiecravings.com/3-ingredient-flourless-peanut-butter-cake-2/
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!
I’m glad you were able to satisfy your sweet tooth with this recipe!
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!
I’m so glad you enjoy this recipe so much!
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!
So glad you liked it!
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!
So happy you enjoyed this!
I’m a bit lactose intolerant so made this with kahlua in lieu of milk-made for an awesome substitution!
yum!
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!
I’m so glad you enjoy this so much!
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)
So glad you like it!
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!!
I’m so glad you like this one!
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.
I’m glad you got this to work for you!
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!
Aww, thanks for the kind words! For a chocolate version, check out this recipe and you can replace the peanut butter cups with chocolate chips: https://kirbiecravings.com/chocolate-peanut-butter-cup-mug-cake/
These look so awesome! Perfect dessert for tonight’s supper. My microwave is broken tho.. Possible to bake these?
I think you could probably bake it but I have not tested a baked version
Can this recipe be used with gluten free flour ( King Arthur measure for measure)?
I have not tested with this particular recipe, so I don’t know. sorry!
Hello, I made this with GF flour, pb2 substitute & semi sweet chocolate chips. Hit the spot and fixed my sweet tooth craving!
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?
I’m so glad you enjoyed! Here is a version I made with an egg years ago: https://kirbiecravings.com/2012/01/peanut-butter-mug-cake.html
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 🙂
I’m so glad you enjoy this recipe!
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.
This is the first I’ve heard of it being cooked in an egg cooker. Love it!
This is the best mug cake recipe ever! I tried it and it was amazing! Thank you!
i’m so glad you enjoyed it!
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.
Could whole milk be used instead of the fat free milk? I am unable to digest anything that is fat free.
i found whole milk produces a slightly drier cake. you may want to add a little bit water to adjust
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.
Yay! So glad you enjoyed this!
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!
I’m so glad you enjoyed it!
Sooo good!
I’m so glad you like it!
I was searching pinterest for a quick peanut butter mug cake, and found this one. It was perfect! Exactly what I was looking for!
I’m glad you enjoyed it!
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!
yes that is fine!