Flourless Oatmeal Banana Bread made oil-free, dairy-free, gluten-free AND refined sugar-free! This healthy banana bread recipe is fun and easy to make using quick oats.

A slice of Flourless Oatmeal Banana Bread on a plate

A couple months ago, I posted The Best Gluten-Free Banana Bread Recipe , and you guys ate it up! In fact, it continues to be the third most visited recipe on my site.

One person who made that recipe commented that she used oat flour and it worked for her marvelously. 

So that got me thinking. 

I have a stockpile of oats, but I donโ€™t typically carry oat flour on hand (can you relate?)โ€ฆ so why not try out the recipe by turning oats into oat flour?

So I rifted off the original recipe and made a few tweaks:

  1. I replaced the 1 โ…” cups of gluten-free flour blend with 2 cups of quick oats, turned into oat flour using my blender
  2. I used MORE banana (a whopping 2 cups of mashed banana instead of the original 1.5 cups, which is about 4 decent-sized ripe bananas).
  3. Because I was adding more banana, I decided to omit the butter and see what happened. Spoiler alert: it worked like a charm!
Loaf of gluten-free oatmeal banana bread

If youโ€™ve never made oat flour using quick oats, itโ€™s crazy easy. You simply toss the oats in a blender and blend them on a low / low-medium speed until a substance resembling flour forms. This only takes 10 to 30 seconds! 

Plus, itโ€™s totally okay if the blended oats donโ€™t form a super fine flour…I leave mine semi-gritty and it still turns out marvelously!

To bring this thing full circle, this flourless oatmeal banana bread is…

  • Naturally gluten-free
  • Flourless
  • Oil-free and butter-free
  • Moist, flavorful, perfectly sweet and cinnamony
  • Refined sugar-free

Letโ€™s bake it up!

Loaf of dairy-free gluten-free oatmeal banana bread with slices cut

How to Make Flourless Oatmeal Banana Bread:

Preheat the oven to 350 degrees F and line a 9โ€ x 5โ€ loaf pan with parchment paper. 

Place the oats in a blender and blend on medium speed until a flour forms (this only takes about 20 to 30 seconds. Remember, it is fine if the flour is somewhat gritty).

Transfer the oat flour to a mixing bowl. Add the coconut sugar, baking soda, sea salt and cinnamon and stir together until combined. 

Mash the bananas in a separate mixing bowl then whisk in the eggs and vanilla extract.

Stir the dry ingredients into the bowl with the wet ingredients. Add in the lime juice and stir to incorporate.

Transfer the batter to the parchment-lined loaf pan and smooth into an even layer. If desired, sprinkle some whole quick oats on top for looksies.

Bake for 40 to 45 minutes, until banana bread has risen substantially and the top appears firm.

Remove from the oven and allow bread to cool at least 30 minutes. Tug on the edges of the parchment paper to lift the loaf out of the pan and place it on a cutting board. Cut thick slices and enjoy!

Loaf of oatmeal banana bread in a loaf pan
close up top down photo of slice of moist banana bread

Recipe Adaptations:

  • For an egg-free version, make my Vegan Oatmeal Banana Bread.
  • Add ยฝ cup to โ…” cup chopped walnuts or pecans to the batter.
  • Toss in ยฝ cup to โ…” cup chocolate chips or chocolate chunks.
  • Whip up a streussel topping for the top of the banana bread.
  • If youโ€™re looking for a grain-free banana bread recipe, check out my Paleo Banana Bread using almond flour or my Coconut Flour Banana Bread.
  • Replace the coconut sugar with brown sugar.
Oatmeal Banana Bread on parchment paper with a napkin and a banana

More Healthy Banana Bread Recipes:

Your oatmeal banana bread adventure starts MEOW!

My cookbook, Paleo Power Bowls, is now available! CLICK HERE to check it out. Thank you for your support!

If you make this recipe, please feel free to share a photo and tag @The.Roasted.Root on Instagram!

Loaf of oatmeal banana bread in a loaf pan

Flourless Oatmeal Banana Bread

4.53 from 55 votes
Flourless Banana Bread made with oats! No oil, butter, refined sugar or flour.
Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Servings: 1 loaf

Ingredients

Instructions

  • Preheat the oven to 350 degrees F and line a 9โ€ x 5โ€ loaf pan with parchment paper.
  • Place the rolled oats in a blender and blend on medium speed until a flour forms (this only takes about 20 to 30 seconds. Remember, it is fine if the flour is somewhat gritty). Transfer the oat flour to a mixing bowl.
  • Add the coconut sugar, baking soda, sea salt and cinnamon and stir together until combined.
  • Mash the bananas in a separate mixing bowl then whisk in the eggs and vanilla extract.
  • Stir the dry ingredients into the bowl with the wet ingredients. Add in the lime juice and stir to incorporate.
  • Transfer the batter to the parchment-lined loaf pan and smooth into an even layer. If desired, sprinkle some whole quick oats on top for looksies.
  • Bake for 40 to 45 minutes, until banana bread has risen substantially and the top appears firm.
  • Remove from the oven and allow bread to cool at least 30 minutes. Tug on the edges of the parchment paper to lift the loaf out of the pan and place it on a cutting board. Cut thick slices and enjoy!

Nutrition

Serving: 1of 10 ยท Calories: 227kcal ยท Carbohydrates: 44g ยท Protein: 7g ยท Fat: 4g ยท Fiber: 5g ยท Sugar: 19g
Author: Julia
Course: Bread, Breakfast
Cuisine: American
Keyword: banana bread, banana bread with oats, coconut sugar, dairy free, flourless oatmeal banana bread, gluten free, healthy banana bread recipe, oat flour banana bread, oatmeal, quick oats
Did You Make This Recipe?I want to see it! Tag @the.roasted.root on social media!

This post contains affiliate links, which means I make a small commission off items you purchase at no additional cost to you.

Flourless Oatmeal Banana Bread made oil-free, dairy-free, gluten-free AND refined sugar-free! This healthy banana bread recipe is fun and easy to make using quick oats.
Julia Mueller
Meet the Author

Julia Mueller

Julia Mueller is a recipe developer, cookbook author, and founder of The Roasted Root. She has authored three bestselling cookbooks, – Paleo Power Powers, Delicious Probiotic Drinks, and The Quintessential Kale Cookbook. Her recipes have been featured in several national publications such as BuzzFeed, Self, Tasty, Country Living, Brit.co, etc.

Read More About Julia

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4.53 from 55 votes (55 ratings without comment)

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Questions and Reviews

  1. This is a great recipe! Thank you! I have a question though. Why omit the oil? I like adding fats to my goodies. Do you think a little coconut oil or butter would make it too heavy? I will give it a go the next time I attempt the recipe. Maybe a little less banana and some oil instead. I used an allulose/monk fruit blend instead of sugar and it was superb!

    1. Thanks so much for sharing your experience, Angela! The only reason I don’t add oil is because some folks try to keep the fat content low when the carb content is high. I personally love a decent amount of moisture and fat in my baked goods, so I love your train of thought ๐Ÿ™‚ Definitely feel free to add 2 to 4 tablespoons of melted coconut oil, butter, or avocado oil the next time you make the bread! xo

  2. This is an amazing banana bread!!! My husband could not detect that it was made with oats instead of regular flour! I followed the recipe, except for the substitution of cane sugar and brown sugar for the coconut sugar. Added walnuts too! The kids love it. This will be a staple in our house. Thank you very much!

    1. My pleasure, Terry! I’m so happy you and your husband enjoy the banana bread! Thanks so much for the sweet note! xo

  3. I doubled the recipe and put chocolate chips in one of the batches. They didnโ€™t last long in my house. We all loved it.

  4. i’d love to try this recipe but really don’t want to use sugar, honey or maple syrup. is it possible to make this sugar free? thank you!

    1. Hi Lisa! You can leave out the sugar and it will still turn out, it just won’t be as sweet ๐Ÿ™‚ Hope you enjoy! xo

  5. This is THE best GF recipie I have tried so far! Thankyou SO SO much! My daughter is Gluten intolerant.She LOVED it

  6. This bread is so good and I’ve made it several times. The whole fam loves it, thank you! I’m curious to know if I could replace some of the banana with pumpkin, or does it have too much moisture in it?

    1. Hi Chelsea!

      I’m so happy you like it! You should be able to replace some of the banana with pumpkin no problem! I think you shouldn’t need to make any changes to compensate for the additional moisture, but if the batter looks too thin, you can add more oats or a few tablespoons of gluten-free flour. Let me know how it works out! xoxo

  7. Really enjoyed this banana bread, so light and fluffy, I added some chopped walnuts and it turned out great ๐Ÿ‘

    1. Hi Tabitha! Yes, absolutely! You can use either regular cane sugar or brown sugar. Hope you enjoy! xoxoxo

  8. I respectfully disagree, Hayden. In the FDAโ€™s Food Labeling; Gluten-Free Labeling of Foods, Final Regulatory Impact Analysis Regulatory Flexibility Analysis, โ€œ oats themselves are inherently gluten free and can be processed in a way that protects against such cross-contactโ€. According to this document it is not accurate to state that some people with Celiac react to small amounts of gluten in oats. There is no inherent gluten in oats. The report states less then 9% of people in gf diets โ€œare allergic or intolerant to oatsโ€œ – not to gluten in oats. Thanks for listening.

  9. That’s incorrect. Oats contain their own form of gluten, and a small proportion of coeliacs are susceptible.

    The FDA has deemed it too difficult to label oats correctly as being merely wheat-gluten-free, but still containing oat gluten.

    Here in Australia, oats that are free of wheat are labelled ‘wheat free’. It’s that simple.

    1. They are if they aren’t grown next to wheat. There may be cross-reactivity in those with Celiac, but oats don’t contain gluten by nature unless they are contaminated when grown next to wheat. Oats that are certified gluten-free are grown away from wheat for no gluten contamination.

      1. Thanks so much for the feedback and the well-researched information. Seems as though not many people take the time to fact check ๐Ÿ˜‰ xoxoxxo

  10. Instead of Mashed bananas. What can be substituted?. Would the rest of the ingredients remain the same. I love the recipe Thanks Judy S

  11. If I use oat flour is it doable and if so still 2 cups as the other way 2 cups oats ground up I think would make less flour only cause I already have some oat flour on hand – thank you

    1. Hi Lana,

      I haven’t tested the recipe using oat flour yet, but you’re correct – in my experience, 2 cups of oats blended up yields about 1 2/3 to 1 3/4 cups oat flour. I would start with 1 2/3 and add more if the batter looks too liquidy. Hope you enjoy! xo

    2. @Lana @Julia, I make this banana bread every few weeks (itโ€™s THAT good) and I just tried for the first time using oat flour instead of blending oats myself, 1 3/4 cups works, however it needs to bake much longer than 40-45 minutes! I would say if using oat flour, bake 55 minutes to an hour!

      1. That’s amazing, Lauren! I’m so happy you enjoy it! I love how moist and flavorful the bread turns out…definitely a great one to keep on repeat! ๐Ÿ˜€ xo

    1. Hi Ivana,

      I haven’t tested the recipe with flax eggs yet, so I’m not sure. I believe it would work but the bread may turn out very dense…if you’re okay with that, I would say it’s worth the try! xo