Kirbie's Cravings

Banana Bread Mug Cake (Paleo)

Single serving paleo banana bread mug cake made in the microwave. This cake cooks in about 2 minutes and tastes like fluffy banana bread.
photo of Banana Bread Mug Cake

I’ve made a lot of baked goods with bananas, like my Peanut Butter Banana Chocolate Chip Muffins, but I love this banana mug cake because it satisfies my craving for banana bread while also providing portion control. When it comes to banana bread, I can eat half of a freshly baked loaf in one sitting.

So for my next paleo mug cake recipe, I decided to tackle banana bread.
close-up photo of Banana Bread Mug Cake
This mug cake is fluffy and light. Because bananas are naturally sweet, I only used a little bit of sweetener. I also added walnuts because banana bread just doesn’t taste the same to me without walnuts.
overhead photo of Banana Bread Mug Cake

Banana Bread Mug Cake (Paleo)

Servings: 1
Prep Time: 10 minutes
Cook Time: 2 minutes
Total Time: 12 minutes
Course: Dessert
Cuisine: American
A single serving banana cake that is also paleo and gluten free.
4.75 from 4 votes


  • 4 tbsp mashed ripe banana about 64 grams weighted; approximately 1 small banana
  • 2 tbsp coconut flour
  • 1/4 tsp baking powder  please note commercial baking powder is not paleo so you may need to make your own homemade paleo baking powder
  • 1/8 tsp cinnamon
  • 1 large egg
  • 1 tsp olive oil
  • 1 tsp maple syrup
  • 2 tbsp almond milk
  • 1 tbsp chopped walnuts


  • In a microwave-safe mug, add all ingredients except walnuts. Whisk until batter is smooth. Stir in walnuts.
  • Cook in the microwave at full power for about 2 minutes or until cake is cooked. Allow cake to cool a few minutes before eating. The banana flavor will be more prominent if you allow the cake to cool for about 15-20 minutes.


  • This recipe works best with overripe bananas. Make sure to mash them as much as possible. Also keep in mind that 4 tbsp of mashed bananas is more than just 4 tbsp of bananas, so make sure to measure after the bananas have been mashed.


Serving: 1mug cake, Calories: 304kcal, Carbohydrates: 30.9g, Protein: 11.3g, Fat: 16.4g, Saturated Fat: 3.7g, Sodium: 158.3mg, Fiber: 7.4g, Sugar: 15.3g, NET CARBS: 24g

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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20 comments on “Banana Bread Mug Cake (Paleo)”

  1. Yum! This was good! Swapped the walnuts for dark chocolate chips, and that was also good! Thanks for the recipe!

  2. can skim milk or 2% be used instead of almond milk?

  3. Would this recipe work with almond flour instead of coconut flour?

    • Not as a direct substitute. You would have to adjust the liquid measurements and without testing it, I don’t know what those adjustments would be.

  4. Just tried this without baking powder. It was great! It didn’t rise much, but was still good. I topped with non-dairy whipped cream cold bananas and walnuts. Delish! Thank you for sharing the recipe. ?

  5. This was really good! My only substitution was chocolate chips because I didn’t have walnuts. I may try omitting the baking powder next time as I could still taste it. Great recipe for using up ripe bananas 🙂

    • make sure to use an aluminum free baking powder. I wouldn’t recommend omitting it altogether because your cake won’t rise enough

  6. Wow! I’m so amazed at how well this turned out for a mug cake! Thanks for this recipe, I can’t wait to try some of your other mug recipes!

  7. Can I replace the egg with egg whites? It looks delicious!

  8. Does it work with frozen bananas?

  9. This turned out great!

  10. i like it so yay

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