Banging Banana Mug Cake: In less than 7 minutes!
With a heavenly mix of banana and maple syrup, this delicious banana mug cake has to be one of my favorite mug cake recipes.
Such an easy recipe, that even the kids can have a go, it’ll be ready in just 6 minutes!

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Ingredients
Bananas
Ok, this wasn’t a surprise I take it? Banana mug cake recipes kind of need bananas. But guess what, they don’t need to be fresh.
This is a great recipe to use up those overripe bananas that have been hanging around in the fruit bowl all week. In fact, they’re the best ones to use as they will give a lovely sweet banana flavor.
Flour
I used plain flour for this recipe and added baking powder to give it a little lift as it cooked. As you know plain flour gives it more of a “sweet treat” feel. But healthier flours work too!
Dairy
Now that I’ve discussed the dry ingredients let’s have a look at the rest. Firstly, butter, then milk (any kind will do), and then an egg is needed (bonus protein points there!).
They all combine nicely to make a lovely cake batter.
Sweetness
I opted for maple syrup rather than the more refined sugar. Mostly because I enjoy that caramelly, woodsy flavor over the simple sugar.
There might be some minor health benefits to maple syrup, but in the end, it’s sugar, haha.
No maple syrup at hand? Just use sugar :thumbsup:
I used 1 teaspoon maple syrup, but you can increase this if you have a bit of a sweet tooth (just remember it will alter the nutritional information).
Toppings
There are literally loads of things you could pop on the top of your banana microwave mug cake.
Some ideas could be, raisins, Nutella (naughty), peanut butter, hazelnuts, almonds, coconut shavings, and grated dark chocolate. Whatever you fancy really – it’s also great on its own!
How many calories are in this fluffy banana mug cake?
Well it’s a single-serve dessert so you get to keep all 359 calories and 10 grams of protein to yourself wink wink
Here’s a quick overview of 1 serving:
Health Benefits
Bananas are the main ingredient of this sweet dessert of course and they have numerous health benefits, including being highly nutritious and filling.
They are packed with antioxidants and may aid lots of ailments such as kidney and heart health. They’re cheap to buy and could aid weight loss too!
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The egg will give you 6 grams of protein, it may not seem much but when trying to heal or gain new muscle, every bit of protein helps, and to gain a bit from a delicious mug cake at that is awesome!
And after all maple syrup contains a third of your daily intake of Manganese which is essential to healthy bones. If not much, it’s slightly “better” than plain sugar.
We should be aiming to keep our sugar intake low (6 teaspoons a day for women, 9 for men), and if this banana mug cake helps us do it, then all the better.
How to make the best banana mug cake?
With simple ingredients, that’s how – and it will be ready in just 6 minutes just follow these simple steps…

- Prep work – Using a microwave-safe bowl or large microwave-safe mug, melt the butter in the microwave for about 20 seconds. Then add the egg, sliced banana, flour, maple syrup, milk, and baking powder.
- Give it a good whisk with a fork, hand blender, or by using a food processor. Make sure the banana gets mashed.

- Cook work – Pop the mug or bowl into the microwave for 1 minute 30 seconds. Take it out, turn it around and give it another 1-minute blast. Use none, some, or all of the toppings, and enjoy!
For any more tips take a look at the recipe card below.

Easy Mug Cake FAQs
How many calories are in a banana?
There are 89 calories in 100 grams of banana.
How to store and reheat a banana mug cake?
You can’t really store a mug cake, it’s best to eat after being cooked.
If you try and reheat a mug cake, you might find it dries it out so I would suggest eating it there and then before it needs reheating.
What to serve with banana mug cake?
A lovely spoonful of yogurt or scoop of ice cream would go really well on top of this delicious mug cake.
Can you make a mug cake ahead of time?
It’s probably best to make your mug cake when it’s ready to be eaten so it’s nice and fresh and warm.
Can you cook a mug cake in the oven?
Yes, actually if you don’t have a microwave, you can use an oven. I recommend preheating to 180 C / 360 F and baking for 20 minutes.
Is glass safe in the microwave?
Yes, glass is safe in the microwave as long as it is marked as ‘microwave-safe’, and the same goes for any ceramic mugs you use as well.
Why are mug cakes chewy?
There could be a couple of reasons why your cake is a bit rubbery or chewy, including overmixing the batter and overcooking the cake.
Luckily it takes minimal ingredients to make this mug recipe, so perhaps if you don’t get your first mug cake quite right, you can easily try again.
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Recipe Variations
There are several different options for changing up this recipe,
- Different flours – One reader has tried this with spelt flour, and I think this is a great idea. Another option could be oat flour or almond flour.
- Different fillings – if you thought a banana mug cake sounded good, a banana chocolate mug cake sounds even better! Mixing in chocolate chips would really push up that sweetness level. Why not add extra fruit, like blueberries?

More Recipes Like This
If you love healthy snack recipes as much as I do I know you’ll be dying to try these as well,
Top Tips!
- Use a very large mug and don’t overfill
- If the cake is leaning to one side, stop cooking, turn and continue cooking
- It’s easiest to mix all the ingredients in a separate bowl
- Cook shorter times rather than overcooking – an overcooked cake isn’t what you want – you can always give it another ten seconds when needed
- You may need to adjust your cook time depending on your microwave. I based this on my 1000w microwave, however, the best way to check is to do the toothpick test into the center of the cake, if it comes out clean it’s ready.

Thanks a ton for passing us this recipe, Cris! We’ll be asking you for many more, that’s for sure 😉
Ingredients
For the regular version
- 1 ripe banana
- 1 egg
- 1 tbsp butter
- 4 tbsp flour
- 1 tsp maple syrup (or honey or sugar)
- 2 tbsp milk (any kind works!)
- ½ tsp baking powder
- Salt to taste
Topping ideas (optional)
- 1 tbsp raisins (whatever you fancy really – it’s also great on its own! Some ideas: nutella (naughty), peanut butter, walnuts, almonds, coconut shavings, grated dark chocolate.)
Instructions
For the regular version
- Slice the banana.1 ripe banana
- Using a bowl or large mug, melt the butter in the microwave for about 20 seconds. Then add the egg, sliced banana, flour, maple syrup, milk, baking powder and salt to taste.1 egg, 1 tbsp butter, 4 tbsp flour, 1 tsp maple syrup, 2 tbsp milk, ½ tsp baking powder, Salt to taste

- Give it a good whisk with a fork, hand blender or by using a food processor. Make sure the banana gets crushed.

- Pop the mug or bowl into the microwave for 1 minute 30 seconds, using a 1000w microwave (adjust as appropriate for your microwave). Take it out, turn it round and give it another 1 minute blast. Use none, some or all of the toppings and enjoy!

NOTES
- Use a very large mug and don’t overfill
- It’s easiest to mix all the ingredients in a separate bowl
- If the cake is leaning to one side, stop cooking, turn and continue cooking
- Cook shorter times rather than overcooking – an overcooked cake isn’t what you want – you can always give it another ten seconds when needed
Nutrition
Whether you love it as a late-night dessert or afternoon snack, this easy banana bread mug cake is such a simple dessert and it’s sure to also become a favorite!
If you’d like to make it extra fancy, why not pop a scoop of vanilla ice cream on top? And if you’d love a vegan version, keep an eye on the website as this is on its way shortly.
The only question left now is which coffee mug are you going to choose!






A fairly good recipe. As I made 2 serving I doubled the recipe, which made 2 very large servings – a single serve would have been sufficient. There is also a lack of sweetness. I think I will double the maple syrup next time.
Hi Simon, and thanks for the feedback. I normally stick to the maple syrup in the recipe and get a little sweetness from the toppings, but you’re right – add another spoonful if you like it sweet! Regarding the serving size – out of interest, did you make the regular or vegan version?
Thanks for the recipe (I can barely boil an egg). I’m having trouble nailing the microwave time down. What wattage of microwave do you use? Or any tips for knowing when it’s done?
Hi Amanda! Good question, and I’ll update it in the recipe, too. I use a 1000w microwave and the times are based off that. For telling when it’s done, just use a knife to poke down the middle – as long as it’s not still liquidy in the middle then you’re good to go 🙂
I’d love to make these but clips there any repercussion for not using hazelnuts in the vegan version?
Not at all, Zita! It’ll still taste great 🙂
Thanks Dave!
So I made it this morning and it was BOMB! I subbed in spelt flour, added in some chocolate chips to this mix with blueberries as a topping and it was soooo good! I did need to give it an additional minute in the microwave but kept it in the small glass bowl I’d used to mix in so maybe that’s why. Anyhow, thanks a million – a delicious, easy breakfast/ snack staple has been added to my diet. 🙂
Woohoo! Hahaha yeah, it rocks, right?? The spelt flour is a great idea (I love the stuff!) and I bet the topping was lush. Yes, funny, it definitely needs different times in different microwaves. Cheers Zita!
Wanted to use over-ripe bananas, too hot to use the oven- excellent, moist cake- Leary of microwave cake-love this recipe!
Is it possible to cook this mug cake in the oven? I don’t have a microwave. (I know,… I know)
Yep, it’s absolutely possible! Preheat the oven to 180°C/360°F and bake for 20 minutes. Done 🙂
Will add it to the recipe – thanks for the heads up, Maryellen!
Thank you 🙂
It turned out awful and tasted horrible, I think it’s because I didn’t have baking powder so I substitute it with 1/4 tsp of baking soda but other than that I did everything the recipe said.
Oh dear! Well these normally rock (in our humble opinion) so it sounds like soda had an unwanted effect!
Oh great! I almost thought I had to buy a microwave (I would’ve, just for this banana cake).
hahaha, that would’ve been too much I think 😉
What if you don’t own a microwave
The cake turned out to be hard and rubber like. ☹️ The sweet was insufficient as well. Recommend making eggless cakes.
HUGE FLOP!!
Oh dear oh dear! Let’s try and work out why. First, which version did you make? Were any ingredients subbed?
Oh yum! Thank you for more banana deliciousness!! I love that there is a vegan and non vegan version of the recipe, perfect for our family! You bet this will be tried asap 🙂
Yees, Cristina is great! She’s got some cool recipes up her sleeves.
I hope the mug cake turns out tasty, fingers crossed 😉