This Oatmeal Banana Smoothie tastes like a rich chocolate milkshake - It is sweet, creamy, decadent, yet healthy and nut-free. Made with rolled oats, it’s the perfect blend of decadence and nutrition.
Looking for banana smoothie recipes? Be sure to try my banana avocado smoothie or spinach banana smoothie recipe.

While oats might seem unusual in smoothie recipes, they’re actually a fantastic addition. Oats are not just for oatmeal! While they’re satisfying and filling in a bowl of oatmeal, there are so many other creative ways to use rolled oats. Check out my roundup of delicious oat recipes that aren't oatmeal!
When blended into a smoothie, oatmeal offers a quick and convenient breakfast option, especially when you're in a hurry. Rich in fiber, oatmeal make smoothies thick and incredibly filling. This banana oatmeal smoothie will keep you satisfied and energized all morning long, similar to overnight oats.
With just a handful of wholesome ingredients, this chocolate banana oatmeal smoothie whips up quickly in your blender. It's nut-free and made without peanut butter, making it a great choice for those with nut allergies.
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Reasons to love it
- Tastes like dessert in a glass!
- Healthy
- Filling and satisfying
- Thick and hearty
- Nut free
- No yogurt making it an ideal smoothie recipe without yogurt
Ingredients
Scroll down to the recipe card below for full information on ingredients and amounts.
- Oatmeal - I like old fashioned or rolled oats but quick cooking oats will work just as fine. Stay away from steel cut variety, as it will be hard to blend and is more difficult to digest when raw.
- Banana - As with all ripe banana recipes, use ripe or overripe bananas. They’re sweeter and creamier! For a thicker, creamier oatmeal smoothie, use frozen bananas. They’ll create a frothy texture that’s reminiscent of a decadent chocolate milkshake.
- Milk - Just the right amount of milk makes this chocolate banana oatmeal smoothie blend up perfectly and also naturally thicken.
- Cocoa powder - As in all cocoa powder recipes, I used Hershey's 100% cocoa. You can find two types of cocoa in the market - Dutch processed and natural variety. Natural cocoa is acidic with an intense flavor and lighter in color whereas, dutch processed has a milder, less bitter flavor and more darker in color. In general, I like the less harsh dutch processed cocoa in this oatmeal banana smoothie recipe for a well rounded and smooth tasting drink.
- Vanilla extract - Elevates it to taste like a dessert shake.
Pro Tip: Ounce for ounce, cocoa powder has more cocoa solids and hence more chocolate flavor than any other type of chocolate.
Substitutions
- Make it vegan by using almond or oat milk and maple syrup instead of honey.
- Add peanut butter or almond butter for added protein and creaminess.
- Add ¼ teaspoon cinnamon instead of vanilla extract.
- Use frozen banana for an ultra-creamy milkshake like consistency.
- Add a small scoop of your favorite protein powder.
How to make oatmeal smoothie?
You can find full printable recipe below, but here is a quick overview of the procedure along with step-by-step photos.
1 & 2. Add old fashioned rolled oats, banana and milk into a blender.
3. Add cocoa powder, honey and vanilla extract.
Tip: Fresh or frozen bananas are great for thickening smoothies and they pair well with chocolate oatmeal smoothie with the rich caramel flavor.
4. Blend until smooth and creamy.
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Storage
Unlike many smoothie recipes that can be refrigerated for a couple of days, this healthy oatmeal smoothie is best enjoyed fresh. The blended oats absorb the liquid, making the smoothie thicker over time. But don’t worry—this recipe makes just one serving, so you won’t have any leftovers.
If you like to make ahead for a busy day, you can also freeze the blended drink in an ice cube tray or freezer-safe container.
Recipe tips
- Best blenders to use: A high speed blender like Vitamix or NutriBullet is great for milkshakes. Nutri bullet was perfect to make this single serve recipe.
- Use rolled, old fashioned or quick cooking. Stay away from steel cut.
- Taste as you go, and add more honey if needed.
Recipe FAQs
No, you don’t need to soak oats before adding them to a smoothie. However, if you're planning ahead, soaking them for a few hours will soften the oats, making them blend more smoothly and creating a creamier texture.
Yes, you can add raw oatmeal to a smoothie! Raw oats will thicken your smoothie and boost its fiber content. A high-powered blender can easily turn them into a creamy breakfast drink. For a smoother consistency, simply soak the oats for a few hours or overnight to soften them before blending.
More smoothie recipes to try
Oatmeal Banana Smoothie
Equipment
Ingredients
- 1 cup milk
- 1 banana
- ½ cup rolled oats
- 1 ½ tablespoons cocoa powder
- 1 ½ tablespoons honey or to taste
- dash of vanilla extract
Instructions
- Add all ingredients into a blender, blend and pour into a tall glass. Enjoy!
Notes
Nutrition
Nutritional information, based on third-party calculations, should be seen as estimates, not guarantees, as various factors like product types, brands, processing methods, and more can alter the nutritional content in recipes.
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Adele Peters
Can I use Maple syrup instead of honey
Maria Doss
Hi Adele, Of course! We preferred the taste of honey better than maple syrup in this oatmeal smoothie recipe, but use whatever you have on hand. Have a wonderful day - Maria
Hossa's Mom
What can I use instead of banana?
Maria Doss
Hmmm, I apologize, but this recipe relies on bananas for their natural sweetness, creaminess, and flavor. If you'd like, you can try substituting some of the banana with yogurt and adding extra sweetener to taste, though the texture and flavor may differ - Maria