Irresistibly Moist Flourless Oatmeal Banana Cake (Gluten-Free & Wholesome!)

Flourless Oatmeal Banana Cake
Flourless Oatmeal Banana Cake

Thank you so much for stopping by today, friends! I can’t wait to share this flourless oatmeal banana cake with you—it’s a recipe that’s been on repeat in my kitchen lately. If you’ve got some overripe bananas staring at you from the counter, this is their moment to shine. Naturally sweetened, hearty, and deeply satisfying, this cake is proof that “healthy” and “delicious” can happily coexist.

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Overview of Recipe Content

This flourless oatmeal banana cake is like banana bread’s heartier cousin. It’s made with ground rolled oats instead of flour, giving it a rustic texture that’s wholesome yet indulgent. Perfect as a snack cake, breakfast treat, or even a healthier dessert option.

Why you’ll love it:

  • Gluten-free and fiber-rich
  • Sweetened naturally with bananas (and just a touch of sugar or honey)
  • Moist and dense, with a comforting banana flavor
  • Easy to whip up in one bowl

Taste: Think banana bread meets oat muffin—a nutty, earthy sweetness with a tender bite.

Health perks: Oats bring fiber and slow-releasing carbs, bananas give potassium and natural sweetness, and there’s no refined flour in sight.

Ingredients

For the Cake:

  • 2 cups (180 g) old-fashioned rolled oats
  • 3 medium ripe bananas, mashed (about 1 ½ cups or 360 g)
  • 2 large eggs
  • ⅓ cup (65 g) granulated sugar or honey
  • ½ cup (120 g) plain Greek yogurt (or dairy-free yogurt)
  • 1 ½ tsp baking powder
  • ½ tsp baking soda
  • 1 tsp cinnamon
  • Pinch of salt
  • 1 tsp vanilla extract

Optional add-ins:

  • ½ cup chopped nuts (walnuts or pecans)
  • ½ cup chocolate chips or dried fruit

Tools Needed

  • Food processor (to grind oats into oat flour)
  • Mixing bowls
  • 8×8-inch baking pan
  • Parchment paper

Suggested Substitutions

  • Swap sugar for coconut sugar or maple syrup.
  • Replace Greek yogurt with applesauce for a dairy-free version.
  • Add peanut butter or almond butter for extra richness.

How to Make Flourless Oatmeal Banana Cake

  1. Preheat the oven to 350°F (175°C). Line your pan with parchment.
  2. Grind oats into a fine flour using a food processor. Don’t worry if it’s slightly coarse—rustic is what we want!
  3. In a large bowl, mash bananas until smooth. Add eggs, yogurt, sugar (or honey), vanilla, and whisk until combined.
  4. Stir in ground oats, baking powder, baking soda, cinnamon, and salt.
  5. Fold in any add-ins like nuts or chocolate chips.
  6. Pour batter into the prepared pan, smoothing the top.
  7. Bake for 30–35 minutes, or until golden brown and a toothpick comes out clean.
  8. Cool completely before slicing—this helps it set into that dense, moist texture we love.

What to Serve with Flourless Oatmeal Banana Cake

  • Morning coffee or a latte (heavenly pairing!).
  • A dollop of nut butter on top for extra protein.
  • Fresh berries and a drizzle of honey.
  • As a cozy dessert, warm with a scoop of vanilla yogurt or ice cream.

Tips for Making It Perfect

  • Use very ripe bananas (lots of brown spots = natural sweetness).
  • Don’t over-grind the oats; a little texture keeps it interesting.
  • Let it cool fully before slicing to avoid crumbling.
  • For meal prep: bake, slice, and freeze for grab-and-go snacks.

Storage Instructions

  • Room temp: 2–3 days in an airtight container.
  • Fridge: Up to 6 days.
  • Freezer: Wrap slices individually and freeze up to 3 months.

General Information

Banana cakes are beloved across many cultures for their simplicity and flavor. This flourless version leans into the American love for oat-based bakes, keeping it hearty and health-conscious without sacrificing taste.

Frequently Asked Questions

Can I make this vegan?
Yes—replace eggs with flax eggs and use dairy-free yogurt.

Can I use quick oats instead of rolled oats?
Yes, but texture will be a bit finer and softer.

Is it sweet enough without sugar?
If your bananas are very ripe, you can skip added sugar or just drizzle honey on top when serving.

What if I don’t have a food processor?
You can buy oat flour pre-ground, or blend oats in a high-speed blender.

Conclusion

This flourless oatmeal banana cake is proof that wholesome can be wildly delicious. Whether you enjoy it for breakfast with coffee or as a midnight snack, it’ll quickly become a household favorite.

If you loved this recipe, you might also enjoy these from my kitchen:

Interactive Elements

I’d love to hear from you! If you make this cake, leave a review in the comments below and share your creations on Pinterest (pinterest.com/poulefrecipe) or tag me on Instagram.

Nutritional Information (per slice, based on 12 servings)

CaloriesProteinCarbsFiberSugarFatSaturated FatSodium
1605g28g4g11g4g1g90mg
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Irresistibly Moist Flourless Oatmeal Banana Cake (Gluten-Free & Wholesome!)


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  • Author: Poulef
  • Total Time: 45 minutes
  • Yield: 12 servings 1x

Description

This wholesome flourless oatmeal banana cake is moist, dense, and naturally sweetened with ripe bananas. Perfect for breakfast, snack, or a gluten-free dessert.


Ingredients

Scale

2 cups old-fashioned rolled oats

3 medium ripe bananas, mashed

2 large eggs

⅓ cup sugar or honey

½ cup Greek yogurt

1 ½ tsp baking powder

½ tsp baking soda

1 tsp cinnamon

Pinch of salt

1 tsp vanilla extract

Optional: ½ cup nuts or chocolate chips


Instructions

1. Preheat oven to 350°F (175°C) and line an 8×8 pan with parchment.

2. Grind oats into flour using a food processor.

3. Mash bananas and mix with eggs, yogurt, sugar, and vanilla.

4. Stir in oat flour, baking powder, baking soda, cinnamon, and salt.

5. Fold in nuts or chocolate chips if using.

6. Pour into pan and bake 30–35 minutes until golden brown.

7. Cool completely before slicing and serving.

Notes

Use very ripe bananas for maximum sweetness.

Cool fully before slicing to keep shape.

Freezes well for up to 3 months.

  • Prep Time: 10 minutes
  • Cook Time: 35 minutes
  • Category: Breakfast, Snack, Dessert
  • Method: Baked
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice
  • Calories: 160
  • Sugar: 11g
  • Sodium: 90mg
  • Fat: 4g
  • Saturated Fat: 1g
  • Unsaturated Fat: 3g
  • Trans Fat: 0g
  • Carbohydrates: 28g
  • Fiber: 4g
  • Protein: 5g
  • Cholesterol: 35mg
Product Image

26-Piece Stainless Steel Mixing Bowls Set

A versatile set of mixing bowls with airtight lids and non-slip bottoms. Includes 3 grater attachments for added convenience in the kitchen!

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I’m Poulef from Poulef Recipes. I love sharing perfected dishes from my kitchen. I’m sure they’ll earn a spot in your heart. Let’s savor this journey together!. Let’s be friends!