Filed under: Gluten-free / Muffins
January 31, 2025

Oat Flour Chocolate Banana Muffins

Soft and moist thanks to ripened bananas and an oil based batter, this rich oat flour chocolate muffin recipe is also gluten-free.

5 from 4 votes
Yield: 12 muffins
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This chocolate banana muffin recipe is based on my oat flour banana muffin recipe , one that is well loved on this blog. For its fans, I wanted to create a chocolate version – and if they wanted to add chocolate chips: a double chocolate oat flour banana muffin! 

I am a big fan of oat flour and while I employ its gluten-free qualities when I’m baking for someone with allergies, I also use it when I just want either more flavor, more chew, or in the case of these muffins: more flavor and a heartier bake. 

This is a really simple recipe; everything in one bowl and you only need a whisk (and a fork – for those bananas!). Add-ins are optional and flexible. 

Recipe Ingredients 

Eggs: whole large eggs. They must be large or the muffins will be dry. 

Sugar: brown sugar, light or dark. Avoid organic brown as it lacks moisture. Note that reducing the amount of sugar added will change the texture of the muffins. 

Oil: any flavorless oil. I like using avocado oil. 

Salt: fine sea salt. If using table salt, use half the amount. 

Vanilla: pure vanilla extract. It doesn’t come through as much so you can skip this if you like. 

Bananas: overripe bananas, about three medium to large sized bananas. 

Sour cream: full fat sour cream. Greek yogurt can be a good substitute. 

Baking powder: double acting baking powder. The leavening will be activated first when added to the batter and then again in the oven. Since we aren’t baking these right away, that ‘double’ is important. 

Cocoa powder: dutch process cocoa powder. If you use natural cocoa the muffins will be lighter colored, less rich in a chocolate flavor and the texture will be more dry. 

Oat flour: if you need the muffins to be completely gluten-free look for an oat flour that can guarantee that. Most oat flour is naturally gluten free but because of possibilities of cross contamination brands do not always guarantee it. 

Add-ins: chocolate chips, nuts, or a swirl of peanut butter or nutella if you like for the top. 

 

How to make Oat Flour Chocolate Banana Muffins 

Whisk together the sugar and eggs; along with the salt and vanilla. 

Slowly add the oil, while whisking: 

Mash the bananas with a fork then add them to the batter and whisk well: 

Sift in the cocoa powder and whisk well: 

Add the oat flour and baking powder then whisk until it’s half combined: 

Then add the sour cream and whisk until smooth: 

If using chocolate chips or nuts, fold them into the batter. 

Cover the bowl with plastic wrap and set on the counter for half an hour or up to an hour. 

Preheat the oven to 350 F. Line two muffin cups with muffin liners, leaving every other cup empty – this is optional. 

Scoop the batter into the muffin cups, filling them nearly to the top. 

If you like, sprinkle sugar on top or melt a few tablespoons of peanut butter (or nutella) or add a few more chocolate chips to the top

Bake the muffins until the tops spring back, about 20 minutes. 

FAQ 

Why does this batter need to rest? 

Unlike all purpose flour, oat flour does not immediately dissolve into the wet ingredients and requires time to do so. Without the rest, the bits of oat are usually more visible in the baked muffins and will give it a grittier texture. 

Can I make my own oat flour? 

I don’t advise making your own oat flour as the store-bought brand is made from a different grain and is always more fine. This makes it ideal for baked goods. Simply grinding up rolled oats won’t yield the same result. 

Can I make this batter the night before and bake it in the morning? 

You can, but in my experience banana based muffin batters get a little gummy and dry when left overnight in the fridge so I avoid it. 

How best to store the muffins and how long are they good for? 

In an airtight container, they’ll keep for about two-three days. They’re best in the first 48 hours though! 

 

Oat Flour Chocolate Banana Muffin Recipe



Oat Flour Chocolate Banana Muffins

Soft and moist thanks to ripened bananas and an oil based batter, this rich oat flour chocolate muffin recipe is also gluten-free. 
Prep Time: 15 minutes
Cook Time: 20 minutes
Rest Time: 1 hour
Yields: 12 muffins
5 from 4 votes

Ingredients

  • 2 large eggs
  • 200g or 1 cup brown sugar light or dark
  • 100g or ½ cup flavorless oil like avocado or canola oil
  • ¾ tsp fine sea salt
  • 1 teaspoon pure vanilla extract
  • 3 medium sized, overripe bananas about 300g
  • 60g or ¼ cup sour cream or plain greek yogurt
  • 2 teaspoons double acting baking powder
  • 50g or ⅓ cup dutch process cocoa powder
  • 225g or 1 ¾ cups oat flour store-bought, not homemade

Method

  • In a large bowl, add the eggs, salt, vanilla, and the brown sugar. Whisk very well, until light and creamy.
  • Slowly, while whisking, pour in the oil and once it’s all in, whisk for a full 30 seconds.
  • Mash the bananas with a fork, then add them to the batter and whisk.
  • Sift in the cocoa and then whisk well, then add the flour and baking powder.
  • Whisk until the flour is half combined then add the sour cream and whisk to combine.
  • Fold in the chocolate chips or any add-ins, if using.
  • Let the batter rest on the counter, covered, for about 30-60 minutes. While it rests, preheat the oven to 350 F and line two cupcake pans with muffin liners, lining every other cup (as pictured).
  • Optional: top with a swirl of peanut butter, nutella or coarse sugar.
  • Bake the muffins for 20 minutes, until the tops spring back.
  • Let cool in the pan slightly then transfer to a cooling rack to cool fully. Store in an airtight container.

Notes

Note: this batter needs a rest on the counter before baking (at least half an hour but up to an hour).

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5 from 4 votes

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Recipe Reviews




  1. 5 stars
    These are fantastic! A little dense but fluffy, just like a good bakery muffin. You can’t tell that they’re made from just oat flour. I did use home-ground oatmeal (30 sec in a Blendtec on speed 10 gets it quite fine). Added 85g (~1/2 cup) chocolate chips (needs more, because these muffins are BIG!). Baked until toothpick came out with moist crumbs not wet batter, ~26 minutes. Could not taste the banana but I’m ok with that.

  2. 5 stars
    A delicious, solid staple recipe if there ever was one! These were honestly so easy to throw together, and they came out perfectly – a tad bit heartier from the oat flour, yet still sweet and fudgy without being too gooey or underbaked. I shared some with a gluten free neighbor and it made her week! I had one for breakfast with a smear of PB and it was delightful as well. Overall, a solid recipe that I would definitely make again. 🙂

  3. 5 stars
    perfect, wholesome, and adjacent to what the French call moelleux – perfectly soft and juicy at the core without being goey. thanks for the recipe :)))

  4. You say twice in this post that store-bought oat flour is “made from a different wheat,” but last I checked oats aren’t made from wheat.