Moist Oat Flour Banana Bread (Naturally Sweetened)

This moist oat flour banana bread is naturally sweetened with ripe bananas and a touch of maple syrup, and it comes together in one bowl with no refined sugar. It’s the kind of loaf that feels like a treat but is made with real, simple ingredients.

The oat flour gives it a tender crumb and a subtle nutty flavor, while the bananas carry all the moisture. If you have spotty bananas on the counter and want something wholesome that actually tastes like banana, this is the bread to make.

Why This Banana Bread Works

The oat flour keeps it incredibly moist for days, unlike some gluten free breads that dry out. The bananas do all the heavy lifting for sweetness, so you only need a small amount of maple syrup, which means the banana flavor really shines through.

It’s also ridiculously easy. No mixer, just a bowl and a fork. And because you can make oat flour yourself by blending rolled oats, it’s the kind of recipe you can bake on a whim without a special trip to the store.

Ingredients

• 3 large very ripe bananas, mashed: look for bananas with plenty of brown spots; they are sweeter and more moist
• 2 large eggs: at room temperature
• ¼ cup melted coconut oil or unsalted butter: melted and slightly cooled
• ¼ cup pure maple syrup: adds natural sweetness
• 1 tsp vanilla extract
• 1¾ cups oat flour: certified gluten free if needed; or blend your own from rolled oats
• 1 tsp baking soda
• 1 tsp ground cinnamon
• ¼ tsp fine sea salt
• Optional ½ cup chopped walnuts, pecans, or dark chocolate chips

Variations / Substitutions

• Make it vegan: replace the eggs with 2 flax eggs (2 tbsp ground flaxseed plus 5 tbsp water, set aside until gel-like) and use maple syrup.
• Swap sweetener: honey works in place of maple syrup for a slightly different depth.
• Add blueberries: fold in 1 cup fresh or frozen blueberries after the dry ingredients are just combined.
• Dairy free: use coconut oil; the bread is already dairy free.
• If you love banana bread, try my classic buttermilk banana bread for a completely different crumb texture.

How To Make Oat Flour Banana Bread

Step 1: Mash the Bananas

Place the 3 large bananas in a large mixing bowl and mash them with a fork until smooth. A few small lumps are fine if you like a little texture. You should have about 1⅓ cups of mash.

The bananas will look glossy and smell sweet, which is a good sign they are ripe enough to carry the bread.

Step 2: Whisk the Wet Ingredients

Add the 2 large eggs, the ¼ cup melted coconut oil, the ¼ cup maple syrup, and the 1 tsp vanilla extract to the bowl. Whisk everything together until the mixture looks uniform and no streaks of egg white remain.

The batter will be a little thin at this stage, with small flecks of banana throughout. That’s exactly what you want.

Step 3: Fold in the Dry Ingredients

Sprinkle the 1¾ cups oat flour, 1 tsp baking soda, 1 tsp cinnamon, and ¼ tsp salt over the wet mixture. Use a silicone spatula to fold everything together, scraping the bottom and sides of the bowl, just until no pockets of dry flour are visible. If you are adding nuts or chocolate chips, fold them in now.

The batter will thicken and look a bit shaggy. Do not overmix, or the bread can turn out dense.

Step 4: Bake the Loaf

Preheat your oven to 350°F (175°C) and grease a 9×5-inch loaf pan, or line it with parchment paper for easy removal. Scrape the batter into the prepared pan and smooth the top with the spatula. Bake for 50 to 55 minutes, until the top is deep golden and a toothpick inserted into the center comes out with a few moist crumbs, not wet batter. Start checking at 45 minutes if your oven runs hot.

The loaf will rise and crack slightly on top, and your kitchen will smell incredible. If the top browns too quickly before the center is set, tent it loosely with foil after 40 minutes.

Step 5: Cool and Slice

Remove the pan from the oven and let the bread cool on a wire rack for 10 minutes. Then carefully lift it out of the pan (using the parchment, if you lined it) and let it cool completely on the rack before slicing, at least 30 minutes. Slice with a serrated knife and serve warm or at room temperature.

Cutting into the bread while it is hot can make it gummy, but once it is set, the crumb is tender and moist, with a soft crust. Leftover slices toast beautifully.

A Few Notes for the Best Oat Flour Banana Bread

• Use the ripest bananas you can find. Ones with heavily speckled, almost black skins are ideal for sweetness and moisture.
• Measure oat flour using the spoon-and-sweep method. Scooping directly from the bag compacts it and can dry out the bread.
• Stir a tablespoon of plain yogurt or sour cream into the wet ingredients for an extra moist crumb.
• The bread tastes even better the next day, after the flavors settle.

Bake times by pan:

Keeping It Fresh

• Refrigerate: Wrap the cooled loaf tightly in plastic wrap or store slices in an airtight container at room temperature for up to 2 days. For longer storage, refrigerate for up to 5 days.
• Reheating: Warm individual slices in the microwave for 10 to 15 seconds, or toast them until the edges are crisp.
• Serve Cold: It is just as good cold from the fridge, especially with a smear of almond butter or cream cheese.

Frequently Asked Questions

Can I use all-purpose flour instead of oat flour?

Yes, but the texture will be lighter and less moist. Use 1½ cups all-purpose flour and keep everything else the same.

Why did my banana bread sink in the middle?

It was likely underbaked, or the batter was overmixed. Check for doneness with a toothpick; if it comes out clean, your bread is done.

How ripe should bananas be for banana bread?

The peel should be heavily speckled or mostly brown. Black bananas are perfect because they are the sweetest and softest.

Can I freeze this banana bread?

Yes, wrap the whole loaf or individual slices tightly and freeze for up to 3 months. Thaw overnight at room temperature.

Moist Oat Flour Banana Bread Recipe

Print Recipe Pin Recipe

Prep Time 10 minutes mins

Cook Time 50 minutes mins

Total Time 1 hour hr

Servings: 8 servings

Calories: 250

Ingredients Method Notes

Ingredients

  

• 3 large very ripe bananas, mashed
• 2 large eggs
• ¼ cup melted coconut oil or unsalted butter
• ¼ cup pure maple syrup
• 1 tsp vanilla extract
• 1¾ cups oat flour
• 1 tsp baking soda
• 1 tsp ground cinnamon
• ¼ tsp fine sea salt
• Optional ½ cup chopped walnuts, pecans, or dark chocolate chips

Method

 

1. Mash the bananas in a large bowl until smooth.
2. Whisk in the eggs, melted oil, maple syrup, and vanilla until combined.
3. Fold in the oat flour, baking soda, cinnamon, and salt until just combined. Fold in nuts or chocolate, if using.
4. Pour the batter into a greased 9×5-inch loaf pan and bake at 350°F for 50 to 55 minutes, until a toothpick comes out clean.
5. Cool in the pan for 10 minutes, then turn out onto a rack to cool completely before slicing.

Notes

For the best texture, let the bread cool completely before slicing. If your bananas are extra large, you may need to add an extra 2 tablespoons of oat flour to keep the batter from being too wet.