Oatmeal Smoothie


5 from 232 votes
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This oatmeal smoothie is thick, creamy, and packed with healthy and wholesome ingredients! Ready in seconds, it’s perfect for a fast and delicious breakfast.

oatmeal smoothie.

Ever enjoyed overnight oats? Well, oatmeal smoothies are essentially a thinner and drinkable version of them.

I used to always be someone who’d make smoothies with fruit, which would naturally thicken a smoothie. However, I wanted to make ones without a banana. It’s not that I dislike a banana smoothie (hello banana bread and breakfast bars), it’s just I found I would always be hungry 5 minutes later!

Adding oatmeal to my smoothie gave it a thickness that a frozen banana would and kept me full for HOURS. It’s perfect for weight loss, and the added fiber and protein kept me going all morning. I’d sometimes forget it was lunchtime!

Table of Contents
  1. Why this recipe works
  2. Oatmeal smoothie ingredients
  3. How to make an oatmeal smoothie
  4. Tips to make the best recipe
  5. Oatmeal Shake Variations
  6. Storage instructions 
  7. More breakfast smoothies to try
  8. Frequently Asked Questions
  9. Oatmeal Smoothie (Recipe Card)

Why this recipe works

  • Quick and easy. All you do is throw everything into a blender and you are done! 
  • Healthy and filling. Thanks to the combination of oats and protein powder, this smoothie keeps you full for hours! 
  • Vegan and gluten free. Made completely dairy-free, this is perfect for most diets out there! 
  • Creamy texture. This honestly is like drinking a milkshake. 

What I love about this oatmeal smoothie recipe is just how much it tastes like having dessert for breakfast! The combination of cocoa powder and the thickness of the smoothie makes it taste like brownie batter!

Oatmeal smoothie ingredients

You’ll love the simple ingredient list to make this recipe. Everything can be found at any grocery store; honestly, you probably have everything in your pantry. Here is what you’ll need:

  • Rolled Oats. Also known as old fashioned oats, these give the smoothie added thickness. Quick oats will also work. Do not use steel cut oats as they cannot be broken down properly. 
  • Cocoa Powder. Adds some chocolate flavor, which is always welcome in the mornings. For a richer flavor, use dark or black cocoa powder.
  • Protein Powder. Optional, but highly recommended if you’d like more staying power and extra chocolate flavor.
  • Sweetener. I like using honey or maple syrup, but granulated sugar also works. 
  • Chia seeds. Optional, but gives both an extra boost of fiber and nutrients, and added thickness.
  • Peanut Butter or alternative. A spoonful or two of peanut butter or almond butter gives the smoothie a fabulous flavor and texture. Keep it nut free by using sunflower seed butter or tahini.
  • Milk. To mix it all around! I like using oat milk or almond milk, but use whatever you have on hand.

How to make an oatmeal smoothie

Simply add all your ingredients into a high speed blender and blend well, until your desired texture is achieved. Give it a quick taste and add more sweetness, if desired. 

oatmeal smoothies.

Tips to make the best recipe

  • Oatmeal smoothies are incredibly forgiving. If your smoothie is too thick, continue to add more milk (or water) until your preferred texture.
  • If you’d like a richer flavor, use canned coconut milk instead of the carton variety (we often do this with our carrot smoothie).
  • Add ice cubes if you’d like extra thick smoothies.

Oatmeal Shake Variations

The beauty of this smoothie is just how easy it is to customize to your preferences or dietary restrictions. Here is what we’ve tested: 

  • Add protein. While oats contain some protein, you can amp it up by adding a scoop (1/4 cup) of your favorite protein powder. I like either casein or brown rice blend. 
  • Add yogurt. Greek yogurt or coconut yogurt will add a boost of protein while also making it extra creamy!
  • Make it gluten free. Choose certified gluten free oats instead of standard ones. 
  • Cut the sugar. Try using sugar free maple syrup or a brown sugar substitute
  • Use different grains. Not a fan of oats? Use quinoa flakes or brown rice flakes instead. 
  • Change up the fruit. Like any good smoothie, this works with berries, pineapple, coconut, or anything else really. 

Storage instructions 

To store: Sometimes, I make a double batch of my oat smoothie recipe and store the second in the refrigerator to enjoy as an afternoon snack.

If you intend to consume the smoothie on the same day, it will keep well for under 24 hours there. If you store it longer, you will need to re-blend it before consuming it. Refrigerated smoothies will keep for up to 5 days.

To freeze: As part of my weekly meal prep, I portion out a single oat smoothie serving and freeze it to have later in the week.

The night before I plan to have it for breakfast, I let it the smoothie block thaw at room temperature, and in the morning, I re-blend it. Frozen oatmeal smoothie blocks freeze well for up to 1 month.

More breakfast smoothies to try

Frequently Asked Questions

Do you need to cook oatmeal before putting it in a smoothie?

There is no need to pre-cook your oats before adding them to a smoothie. The blender breaks them down nicely and makes them drinkable.

Is this good for weight loss?

With tons of protein, fiber, and slow releasing carbohydrates, this smoothie is fantastic for a weight loss diet. It’s also low in calories and filling.

Does blending oats destroy nutrients?

Blending oats does not alter it’s nutritional profile whatsoever.

oatmeal smoothie recipe.

Oatmeal Smoothie

5 from 232 votes
This oatmeal smoothie is thick, creamy, and packed with healthy and wholesome ingredients! Ready in seconds, it's perfect for a fast and delicious breakfast.
Servings: 2 servings
Prep: 1 minute
Cook: 1 minute
Total: 2 minutes



  • Add all your ingredients in a high-speed blender and blend until desired consistency. If too thick, add more milk.
  • Transfer to a glass and enjoy.


For a more filling and thicker smoothie, feel free to add a frozen banana or frozen berries.
TO STORE: If you store the smoothie in the refrigerator, for more than 1 day (24 hours), you will need to re-blend it before enjoying it. Refrigerated smoothies will refrigerate well for up to 5 days. 
TO FREEZE: Place smoothie in a small container and store in the freezer. Thaw smoothie block at room temperature, before re-blending. It will freeze for up to 1 month.


Serving: 1servingCalories: 138kcalCarbohydrates: 18gProtein: 12gFat: 3gSodium: 185mgPotassium: 188mgFiber: 5gSugar: 2gCalcium: 224mgIron: 1mgNET CARBS: 13g
Course: Breakfast
Cuisine: American
Author: Arman Liew
Tried this recipe?Give us a shout at @thebigmansworld or tag #thebigmansworld!

Arman Liew

I’m a two time cookbook author, photographer, and writer, and passionate about creating easy and healthier recipes. I believe you don’t need to be experienced in the kitchen to make good food using simple ingredients that most importantly, taste delicious.

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Recipe Rating


  1. 5 stars
    Yummy! This smoothie looks so refreshing. I can’t wait to give this a try.i love this healthy smoothie 🥤

  2. I’m in love with this smoothie every since my dash diet this smoothie is life due to me not eating breakfast but drink decaf coffee I stay full until 1pm and then it’s lunch time

  3. 5 stars
    This smoothie never fails! It’s so thick and flavorful, I really feel like I’m eating some dark chocolate dessert! And it’s healthy!?! I often skip the peanut butter for preference and half the recipe because it’s just too much food for me. Comes out amazing every time! Thank you for this perfect oatmeal smoothie recipe and introducing me to the world of oat smoothies

  4. 5 stars
    I just made this smoothie using peanut butter and monk sugar. So good. I never want to eat in the mornings, but now I have something to look forward to. I am going to try mixing all ingredients the night before so all I have to do is just blend.

  5. 5 stars
    Have this every morning and DAYUMMMMMMMMM its as if the taste gets better and better! My whole family love it when I ask if they want some. Overall a huge 10/10. Best smoothie by far !!!

  6. I don’t think I could ever do just a smoothie for dinner. I like to eat, haha, so I think I would have to serve it up smoothie bowl style and top it with lots of texterous (not a word 😉 ) goodness. But I’m definitely not opposed to chocolate for so serve it on up!

  7. A former boyfriend introduced me to oatmeal smoothies/milkshakes If they didn’t remind me of him so much, I’d probably make them all the time.

  8. I’ve had very similar smoothies before and they are amazing. Especially after a good workout. Glad you’ve found one you’re excited about, that’s so awesome!

  9. Wait. Brownie batter that I can drink…for a meal? Sign me up for this one…like yesterday! *Queue Applause* Haha! So I am strictly a morning worker-out-er. Like you, if it doesn’t happen first thing, then it’s unlikely to happen at all. But if there is a promise of this oatmeal smoothie in there, then I might be convinced to wait until later in the day. I’m still recovering from that nasty cold, so the workout room in the basement has been mighty quiet lately…next week I’ll hit it again! But I won’t be able to wait until next week for this smoothie. That has to happen today!