Kirbie's Cravings

Flourless Nutella Banana Mug Cake

flourless nutella banana mug cake photo
This flourless, gluten free mug cake is just 5 ingredients and cooks in 2 minutes in the microwave. It’s an easy dessert that will satisfy your sweet tooth.

Remember that Flourless Nutella Banana Bread I shared last month? Well here is my mug cake version! I’ve made quite a few blender flourless quick cake breads lately, including Flourless Nutella Banana Bread, Flourless Nutella Pumpkin Bread and Flourless Peanut Butter Banana Bread. And while they have all been delicious, my favorite has been the Flourless Nutella Banana Bread. There is just something so comforting about banana bread.
overhead photo of flourless nutella banana mug cake
I probably shouldn’t admit this, but my husband and I finished the entire loaf in one day! Given our lack of self-restraint, I’ve been avoiding baking another one but it’s definitely been on my mind. Enter this mug cake. It’s so great for portion control. This makes one very large mug cake, perfect for one or two people. The best part is that it cooks in 2 minutes!
photo of of a spoon scooping out a bite of flourless nutella banana mug cake
P.S. If you love mug cakes, I wrote an entire mug cake cookbook, 5-Minute Mug Cakes. I also have a brand new book, Dump Cakes from Scratch. (affiliate links)

Flourless Nutella Banana Mug Cake

Servings: 1 mug cake
Prep Time: 4 minutes
Cook Time: 2 minutes
Total Time: 6 minutes
Course: Dessert
Cuisine: American
This flourless, gluten-free mug cake is just 5 ingredients and cooks in 2 minutes in the microwave. It's an easy dessert that will satisfy your sweet tooth. This recipe makes one mug cake that's big enough to be shared.
5 from 3 votes


  • 1/4 cup Nutella
  • 1 large egg
  • 1 medium ripe banana peeled and completely mashed
  • 2 tbsp unsweetened cocoa powder
  • 1/2 tsp baking powder


  • Add all ingredients into an oversized microwave-safe mug (that can hold at least 16 oz of liquid; the one in the photo is a little smaller which is why the batter overflowed slightly). Mix vigorously with a small whisk until batter is smooth and egg is completely beaten into the batter.
  • Place mug in the microwave and cook for about 2 minutes at full power. The cake will initially rise quite high while cooking and then condense down once it stops cooking. Let cake cool a few minutes before eating.


Serving: 1mug cake, Calories: 603kcal, Carbohydrates: 80.8g, Protein: 13.5g, Fat: 30.6g, Saturated Fat: 10.5g, Sodium: 106.5mg, Fiber: 8.3g, Sugar: 56.8g, NET CARBS: 73

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!


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Recipe Rating

12 comments on “Flourless Nutella Banana Mug Cake”

  1. Just made this; so easy and just 5 ingredients! It really satisfied my craving for chocolate cake. I added a bit of salt and vanilla extract, and it took about 3 minutes in my microwave. The result was soft, moist, and chocolatey. I’ll definitely make this again the next time I have an overripe banana! Thanks for sharing this!

  2. Can i add melted chocolate instead of nutella?

  3. Came out great! Not too swert but still rich in flavor. Topped it with a scoop of vanilla ice cream! 

  4. I don’t understand “unpeeled” banana.

  5. Just tried this and I’m sold!! =9

  6. Awesome recipe! I want to try this, but don’t have any bananas at home. Will one mashed avocado be a good substitute?

    • Unfortunately no. The recipe really is meant to be a banana and nutella cake so if you take away the banana, you take away the banana flavor. Also a lot of the cakes sweetness and texture comes from the bananas, and avocado won’t yield the same results.