This moist Peanut Butter Mug Cake is one of my favorite dessert recipes! It is the perfect treat to satisfy your sweet tooth.
Mug cakes: my new obsession.
Seriously. This week I have made multiple mug cakes. The first mug cake recipe that I made was a failure, but the others.. Well those others have turned out great. I think I’m practicing having barely any kitchen appliances for when I move to Toronto. Sadly I think I’m going to have to leave my food processor and ice cream maker here. The only thing about that is that I almost want to leave behind all my clothing and take all my baking stuff. Is that weird?
But back to this cake. I made this for breakfast (because who DOESN’T want cake for breakfast? Seriously?) and let me tell you, it filled me up and kept me going for a long time.
This might be the best and worst quality of a mug cake. The fact that it takes less than 5 minutes to make a simple cake ready for you to eat? That’s dangerous. This should come with its own warning label. But this is the perfect dessert to make when a sweet craving strikes. It is made in just minutes, which makes it an easy recipe for when you are craving a peanut butter cake.
Peanut Butter Mug Cake Ingredients
You just need a couple of simple ingredients to make this easy peanut butter mug cake recipe. All you need is:
- all-purpose flour
- white sugar
- baking powder
- large egg
- creamy peanut butter
- milk
- oil
Tips
Make sure that you use a microwave-safe mug. There are so many times that I make an amazing mug cake but I use a coffee mug that is not microwave safe. This results in the mug overheating, and your cake to occasionally get a rubbery texture.
Keep an eye on your microwave cake. Different microwaves heat food with a different microwave power. If this is the first time making a mug cake, watch it carefully while it is cooking. Once the cake rises past the top of the mug, pause the microwave for a couple of seconds then turn it back on. You may need to change your cooking time accordingly for next time you make it.
Variations
Switch up the kind of peanut butter you use. Instead of smooth peanut butter, you can use either crunchy or natural peanut butter. You can also use peanut butter powder if that’s all you have on hand. Or any nut butter, such as cashew or almond butter.
Add in some mix-ins. I love adding in a tablespoon of chocolate chips or peanut butter chips. But you can add whatever mix-ins you have on hand.
Top the cake with something decadent. I love adding a scoop of vanilla ice cream on top to make it the perfect single serving dessert. But if I just want a little more of a peanut butter treat, I will add an extra drizzle of peanut butter on top.
More Microwave Mug Cake Recipes
Like this Peanut Butter Mug Cake? Then you will love these easy mug cake recipe ideas:
And if you try this recipe, let me know! Rate it, leave a comment and tag me with #atasteofmadness on Instagram! I always love seeing what you are creating!
Peanut Butter Mug Cake
Ingredients
- 4 Tbsp all-purpose flour
- 4 Tbsp granulated sugar
- 1/4 tsp baking powder
- 1 large egg
- 3 Tbsp peanut butter
- 3 Tbsp milk
- 3 Tbsp oil
Instructions
- In a large coffee mug, whisk together all the ingredients until smooth.
- Microwave for 1 1/2 minutes, and remove to see if it is done. If not, continue to microwave in thirty second intervals.
This looks faaaantasmic! I have only tried to make a chocolate mug cake a couple of times before (one worked, the other….definitely didn't haha!)
Thanks for sharing 😀 x
How convenience!? But it could be "dangerous" for me as it is so easy to prepare….I can't probably do a super quick "clean up" before anyone finds out as well! hahaha…
Mug cakes are genius.
That really looks inviting. Blessings, Catherine
I just moved into my sisters house for a month, left most of my clothes behind and bought a giant box of bakeware instead 🙂 I'm a bit funny about mug cakes, sometimes they're great, sometimes they're horrific. Will have to try this one!
How’s the texture on this? I’m another that can be picky with mug cakes. I think it’s the texture the microwave gives the cake. Looks delicious and moist though.
They are dangerous when they’re so easy and quick to make. I’m laughing you had it for breakfast though. Don’t even tempt me.
It was very nice and moist. I agree, I have had some very rubbery mug cakes, but I have made it twice in the span of a week. It's just so easy, I couldn't help it!
Looks delicious! I love mug cakes too, I'll have to try this variation soon. 🙂
Cathleen, I think mug cake is a good idea. You can just make one portion and not bake a whole cake. I've got to try it someday 🙂
I had a tiny obsession with mug cakes too! but after lots of fail attempts, I stopped. LOL. This PB version sounds oh-so-good! I can already taste it!
Every time I see a mug cake, Kathleen, I swoon! I really must try one soon, and a peanut butter one sounds divine! You're moving to Toronto? How exciting!
Mug cakes for the win! Looks pretty tasty, anything with peanut butter makes me happy though! 🙂
I know what you mean about leaving your clothes behind over baking stuff, when I moved house, the first thing I set up was the kitchen, and then I realised I'd left my wardrobe boxes at home… I was so anxious to get all my equipment set up!
Oh yes.. mug cakes are very addictive 🙂
I agree. Anything this easy and this good should come with a warning label..lol
I need to make some of those. Peanut butter sounds fantastic!
ela h.
Gray Apron
Mug cakes are so much fun! And anything with peanut butter has my number. I so love the stuff. This is wonderful — thanks.
Can you believe that o never made mug cake in spite of seeing so many of them…now you convinced that I should try…thanks for the recipe Cathleen.
Enjoy the rest of your week 😀
Hi Cathleen, peanut butter and avocados are my favorite things, not together. Looks amazing, love little cakes like this!
I find mug cakes to be quite dangerous, because the easier they are to make – the more I'll make them! Though…this looks so good. Love all things PB.
I love mug cakes! I always make them for my husband when we have no dessert in the house…since he demands dessert after dinner 😉 I usually make chocolate but I think I need to try this pb version!!!
Mug Cakes are the BEST!!! Peanut Butter? Even better!
I'm totally obsessed with mug recipe, can't wait to try this!
Drooling over this! Definitely dangerous 😉
Mug cakes are so fun! I often crave just a little something sweet late in the evening, after the kiddos are snuggled into their beds … I just wish I had a little something for Romeo and me to munch on. Mug cakes are the answer! Love this version!!! 😀 ~Shelley
My husband is a huge peanut butter lover so I had to make him a mug cake for a special treat. Now he’s asking for the recipe and I think I’ve created a monster…
It’s DANGEROUS!!
I love making mug cakes, especially as a late night treat, but I’ve never made it with peanut butter. I can’t wait to try this recipe out!
Let me know how it goes 🙂
What a great flavor for a mugcake. I would love to make it for my husband, but he cannot eat sugar. Can I use a substitute?
Yes you can! Stevia powder should work!
Looks so gorgeous! I love how easy it is to make this mug cake 🙂 Love this recipe! Thanks for sharing!
You’re welcome!
This peanut butter mug cake is perfect! I was craving something sweet and had all of the ingredients to make it, it hit the spot!!
So glad you liked it 🙂
This is the perfect sweet treat for when you’re craving something fast after dinner. Peanut butter is my favourite and I served it with a little whipped cream – yum!
The best combo!! So glad you liked it!
I’m obsessed with mug cakes lately too! This one is just golden and I love your idea of adding some chocolate chips..YUM!
It’s one of my favorites 🙂
Absolutely loved this peanut butter mug cake. I drizzled a l ittle hot fudge on it because I am addicted to that combo – loved it!
That combo sounds magic!
This was such a quick and easy dessert that does not disappoint! Exactly what I needed to cure my sweet tooth; definitely, a new favorite recipe!
One of my favorites too. Thanks Sara!
That was so fast and delicious when you’re craving peanut butter NOW!
And only a little more acceptable than eating peanut butter straight from the jar 😉
I don’t think I’ve ever tasted a better mug cake! So tasty!
Mug cake has to be the best 🙂
I love a good mug cake – it’s perfect for portion control! I’ve never tried it with peanut butter though. Looks delicious!
Let me know if you give it a go!
I only recently started making mug cakes and now I’m hooked. This peanut butter mug cake is one of the ones I like the most!
That makes me so happy to hear!
What and easy to make and delicious little cake! My wife loved them!
So glad it was a hit with your wife!