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Flourless Oatmeal Banana Bread (Gluten-Free)

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 don’t typically carry oat flour on hand (can you relate?)… 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 ⅔ 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 you’ve never made oat flour using quick oats, it’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, it’s totally okay if the blended oats don’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

Let’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 9” x 5” 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 ½ cup to ⅔ cup chopped walnuts or pecans to the batter.
  • Toss in ½ cup to ⅔ cup chocolate chips or chocolate chunks.
  • Whip up a streussel topping for the top of the banana bread.
  • If you’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
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4.52 from 54 votes

Flourless Oatmeal Banana Bread

Flourless Banana Bread made with oats! No oil, butter, refined sugar or flour.
Prep Time15 minutes
Cook Time40 minutes
Total Time55 minutes
Course: Bread, Breakfast
Cuisine: American
Servings: 1 loaf
Calories: 227kcal
Author: Julia

Ingredients

Instructions

  • Preheat the oven to 350 degrees F and line a 9” x 5” 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 | Calories: 227kcal | Carbohydrates: 44g | Protein: 7g | Fat: 4g | Fiber: 5g | Sugar: 19g

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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.
Recipe Rating




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Lauren

Friday 15th of September 2023

Hi! This looks so good, I really want to try it! My question is if I can sub the coconut sugar with maple syrup without messing it up lol

Julia

Monday 18th of September 2023

Hi Lauren! I haven't tested the recipe using pure maple syrup instead of coconut sugar so I'm not sure how it would turn out. I imagine adding a little additional oats (say 1/4 cup to 1/2 cup) would help offset the addition of liquid. Let me know if you try it!

Karen

Sunday 13th of August 2023

Just started bring gluten free and this was amazing. I didn't have coconut sugar so I used 1/3 cup honey and added 1/2 cup gluten free chocolate chips. SO GOOD!!

Julia

Monday 14th of August 2023

Wahoo! I'm thrilled to hear it, Karen! Thanks so much for sharing your experience! xo

Angela

Wednesday 28th of June 2023

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!

Julia

Saturday 1st of July 2023

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 :) 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

Greg Lara

Sunday 25th of June 2023

We added walnuts and chocolate chips, and it turned out great! Thank you!

Julia

Tuesday 27th of June 2023

Ooh, yummy! So thrilled to hear it! xo

Terry

Friday 17th of February 2023

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!

Julia

Monday 20th of February 2023

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

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