After enjoying a few of these Apple Cinnamon Mug Cakes last week, I am really getting into mug cakes again, and this honey peanut butter banana mug cake recipe is one of my absolute favorites. It's super moist thanks to the banana and honey and strikes the perfect balance of easy yet exciting. It does take a bit more time than a basic vanilla or chocolate mug cake, but most of the ingredients are kitchen staples, and you can still go from no cake 🙁 to "YAY! cake!" in less than 7 minutes. Plus, there’s a warm, honey-sweetened and slightly salty peanut butter center, need I say more?
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Honey Peanut Butter Banana Mug Cake Ingredients
The ingredients are mostly pantry staples as I mentioned: flour, honey, baking powder, milk, oil, salt, vanilla, banana and peanut butter. There is actually no sugar in this recipe. Between the honey and banana (ripe are the best of course!), the cake is plenty sweet. And, if you're like me, you will definitely want to drizzle on some extra honey after it's cooked, just for good measure!
How to Make Honey Peanut Butter Banana Mug Cake
Like most mug cakes, this one is easy to make. But, it is slightly more involved than just mixing all the ingredients together. It's totally worth the bit of extra effort though I promise!
Step 1: Mix the Dry Ingredients
Just dump in the flour, baking powder, and a pinch of salt. Mix together directly in a large microwave safe mug. Or, alternatively - if you want to unmold the mug cake to serve it, grease the mug and mix the ingredients in a separate bowl.
Step 2: Add in the Wet Ingredients
Now pour in the oil, 1 tablespoon honey, milk and vanilla. Mix well until most of the lumps are gone (but don't overmix, stop when the batter is mostly smooth).
Here is what it looks like when it's all mixed:
Step 3: Add the Chopped Banana
This is simple enough, just dump in the banana and give a quick stir. I recommend not chopping your banana too finely though. Otherwise the pieces just sort of melt and you don't get nice, defined chunks in the final cake. If you are mixing your batter in a separate bowl, at this point transfer it into the greased mug.
By the way, the measuring cups and spoons I'm using here are the OXO Good Grips Measuring Cups and Spoons Set and I absolutely love them! They are sturdy and have nice handles that are easy to grip (makes sense since they are literally called "Good Grips"!).
Step 4: Add the Peanut Butter Honey Filling
In a separate small bowl, mix the remaining 1 tablespoon of honey, peanut butter, and a good pinch of salt.
Take all of the peanut butter honey mixture onto the tablespoon and plop it down into the middle of your batter.
Lift the spoon off the peanut butter glob. Then use the back of the spoon to push the peanut butter down into the batter. It's ok if some of the peanut butter peeks out of the top. It should look something like this:
Step 5: Microwave and Enjoy Your Delicious Honey Peanut Butter Banana Mug Cake!
Microwave on high for 90 seconds and check the cake, if the top is still a little bit wet, microwave for another 15 seconds or until the top is firm. If you want to unmold the cake (and greased the mug beforehand!), run a knife around the edges of the cake first to help it slide out easily. Top the cake with additional chopped banana and a drizzle of honey if you like and enjoy!
If you're into mug cakes, check out some of my other favorites below!
Note: This post was originally published on November 7, 2017 and updated on June 5, 2019.
PrintHoney Peanut Butter Banana Mug Cake
A deliciously moist honey banana mug cake surrounds a warm, slightly salty honey peanut butter center.
- Prep Time: 5 minutes
- Cook Time: 90 seconds
- Total Time: 6 minutes 30 seconds
- Yield: 1 mug cake 1x
- Category: dessert
- Method: microwave
- Cuisine: American
Ingredients
- 5 tbsp. flour
- ½ tsp. baking powder
- 2 pinches salt, divided
- 1 tbsp. vegetable oil
- 3 tbsp. milk
- ¼ tsp. vanilla
- 2 tbsp. honey, divided
- ¼ c. chopped banana (about ½ small banana)
- 2 tbsp. peanut butter
- extra honey and chopped banana for topping (optional)
Instructions
- Mix flour, baking powder, and pinch of salt in large, microwave safe mug (see note). Mix in oil, milk, 1 tbsp. honey and vanilla until smooth. Add in chopped banana, stir gently to combine.
- Mix together 1 tbsp. honey, 2 tbsp. peanut butter and generous pinch of salt in a separate bowl.
- Scoop honey peanut butter mixture out of the bowl and place in the middle of the cake batter. Press down on the peanut butter with the back of a spoon so the peanut butter sinks down into the batter (peanut butter doesn't need to be completely covered).
- Microwave on high for 90 seconds, or until the top of the cake is firm (after the first 90 seconds, microwave in 15 second increments until cake is cooked).
- If unmolding cake, run a knife around the edges of the cake before inverting onto a plate. Serve with additional chopped banana and honey drizzled on top (optional).
Notes
If you want to unmold the mug cake onto a plate rather than eating directly out of the mug, mix the batter in a separate bowl rather than in the mug itself. Grease the mug before adding batter to the mug.
Tatiana
mug cake awesome idea never heard of such a thing how cool prefect for a little treat when you want it
Lizzy
What's better than a cake you don't have to share? Love the flavors in this mug cake!
Paula
Calories?
Kate
Hi Paula, thank you for your question - I did a calculation of the calories using myfitnesspal, it came out to be 558 calories (but this is just an estimate). I hope this is helpful; one of my goals for this year is to add nutrition information to all of the recipes on my site, so stay tuned for that! If you end up trying the mug cake I hope you like it! 🙂
Nicoletta
I have never made a mug cake, but I have to say it looks delicious! Peanut butter, honey, banana. What's not to like?
Kylee
This is perfect for me! I need a snack right now - and can totally get behind this idea. Plus, I don't have to share = win.
Lori | The Kitchen Whisperer
Mug cakes are my bffs when my husband is gone for the night and I have the house to myself! This looks so delicious!
Amy
This looks fantastic! I love combining peanut butter and banana! I can’t wait to make this for my kiddos—they are going to love it. Thanks for the recipe!
Jacqueline Debono
I've never made mug cakes but am dying to try this one out. I love the idea of individual portion cakes and the banana, peanut butter and honey combo sounds scrumptious!
Anne Lawton
This is such a great idea for a quick and easy dessert!
Rebecca Blackwell
My teenage daughter is our family's mug-cake-making queen. I showed her this recipe about 15 minutes ago, and we are currently sharing one of these yummy cakes now. 🙂 Thank you so much for a great recipe!
Jessica (Swanky Recipes)
I've always wondered how to make a serving or two of cake at a time. Most times, I want an instant treat to satisfy a sweet tooth but I don't need a whole loaf pan around. This is perfect when I'm craving it late at night or when the hubby is out of town.
Linda
I love mug cake and this version sounds better with a combination of peanut butter and banana. Elvis style, but better!
Michele
I love desserts you can make in a mug! This flavor combo has me craving peanut butter and bananas right now. Delish!
Molly
Thanks for the inspo! I added dark choc pieces, it rocked in an Elvis manner ?
Kate
That's awesome Molly thanks for sharing! Adding dark chocolate sounds amazing I will try that for sure! 🙂
hannah
this is so good i added some chopped almonds into the batter too
Kate
Oooh that sounds delicious, to add some extra crunch I love it! Will have to try that next time 🙂
Angel
My wife absolutely loved this! Definitely will make this regularly to use up over-ripened bananas.
Kate
Thank you Angel for sharing, I'm so glad your wife enjoyed the recipe! I always have at least overripe banana in my fruit bowl but usually not enough for a whole banana bread, so this would be a good use for those!
Julie
Overall very good. Next time I'll double the batter and not put the bananas in. I prefer them to not be hot and mooshy. I also added cinnamon to the batter and sprinkled it over the top after I plated it. Yummy!
Kate
I'm glad you liked the mug cake Julie, and thanks for the suggestion to add cinnamon, that sounds delicious! 🙂
Melinda
I love this ingredient combo, so I was so excited to try this! The result turned out a little more cake-y than I prefer, but the taste was nice overall and the honey peanut butter filling was a delicioussss idea!
Kate
Thank you Melinda, I'm glad you enjoyed the mug cake! 🙂
Ella
I started making this recipe last week and it is SO good. I add cinnamon as well because I think it works well with the other ingredients (and I adore cinnamon).
Thank you for such a wonderful recipe!
Kate
Aw Ella your comment made my day, I am delighted that you enjoyed the mug cake recipe. This flavor combo is one of my favorites as well. And I think cinnamon sounds like a wonderful addition! If you really like cinnamon, I suggest you check out my recipe for cinnamon muffins as well!