This oatmeal smoothie tastes just like a cinnamon oatmeal cookie. It’s healthy, packed with over 20 grams of protein and makes for a great breakfast or post-workout snack!

Love having oatmeal for breakfast, but want to switch things up? You’re in luck because today I’m sharing a recipe for an oatmeal smoothie that tastes just like you’re eating an old fashioned cinnamon oatmeal cookie but in smoothie form.

Why You’ll Love This Smoothie

• It comes together in no time at all… just add everything to your blender and blend away! Perfect for those busy mornings.
• It’s made with just six simple ingredients that I bet you already have in your kitchen right now!
• It’s packed with over 20 grams of protein making it a great breakfast option or post-workout snack.

Adding Oats to Smoothies

Yes, adding oats (or ever leftover cooked oats) is a thing! Adding rolled oats to your smoothie is perfectly safe and gives the smoothie a thick and creamy texture. The oats also add a bit of extra nutrition, including fiber, which will help make your smoothie more satisfying and filling.

As for what type of oats to use for smoothies, I recommend old fashioned rolled oats or quick oats. Both of these options are pre-cooked and will blend up just fine in your blender. I don’t recommend steel cut oats as they are the least processed and will be harder to blend and more difficult to digest.

Ingredients Needed:

• frozen banana – frozen banana helps to thicken this smoothie and adds a little sweetness. Be sure to check out my guide for how to freeze bananas.
• unsweetened almond milk or oat milk – any milk will work, but I prefer almond milk or oat milk. If you want extra oat flavor and more creaminess, go for the oat milk!
• old fashioned oats – you can’t have an oatmeal smoothie without oats! Be sure to grab gluten free oats if need be. My fave brand is Bob’s Red Mill gluten free old fashioned rolled oats. 
• vanilla protein powder – I love adding protein powder to my smoothies to make them more filling! I think the vanilla flavor blends really well with this particular smoothie. I like using Nuzest‘s smooth vanilla protein powder. You can use my code eatingbirdfood for 15% off your order.
• cinnamon – for a bit of sweet spice and oatmeal cookie flavor!
• pure vanilla extract – a great flavor enhancer! 

How to Make

Place your banana, milk, oats, protein powder, cinnamon, and vanilla in a high-powered blender and blend until smooth. Add a little more milk if it’s too thick until you reach your desired consistency.

Pour into a glass or bowl (depending on whether you want to use a spoon or straw) and top with your favorite smoothie toppings.

How to Make a Smoothie Without Banana

The banana in this recipe gives the smoothie a thick and creamy texture and also adds a bit of sweetness, without being too overpowering. If you’re looking for a low-sugar option, are allergic to bananas or simply don’t like them, here are some ideas for replacements:

• ice – replace the frozen banana with ice (about 1 cup). It will give the shake volume and add a nice, frozen slushy texture.
• frozen milk ice cubes – this is the same concept, but instead of using regular ice cubes, make frozen cubes using your favorite non-dairy milk (like almond or coconut) and use about 1 cup of these cubes instead of the frozen banana.
• frozen cauliflower rice – I use frozen cauliflower rice in my shakes all the time and it works as a low-sugar replacement for frozen banana. I do find that it adds a different texture to shakes, especially if you use a large amount. I’d start with 1/4 cup, give the shake a taste and then add more if needed.
• frozen zucchini – like frozen cauliflower, frozen zucchini works great as a low-sugar replacement for frozen banana. It also doesn’t add a ton of flavor! You can blanch or steam your zucchini before freezing if you want to make it easier to digest, but I don’t find this necessary.

Pro tip!
The banana does add sweetness to this recipe, so if you're not replacing it with another frozen fruit you might want to add a touch of sweetness in the form of maple syrup, agave, honey or stevia. 

Frequently Asked Questions

More Smoothie Recipes to Try

• Avocado Mango Smoothie
• Chocolate Peanut Butter Smoothie
• Strawberry Banana Smoothie
• Green Protein Smoothie
• Peanut Butter Green Smoothie
• Chocolate Peppermint Smoothie
• Cottage Cheese Smoothie
• Carrot Cake Protein Smoothie
• Tahini Smoothie
• 3-Ingredient Mango Smoothie
• Chocolate Covered Strawberry Smoothie

Oatmeal Recipes to Try

• How to Make Oatmeal
• Baked Oatmeal Cups 4-Ways
• Baked Oatmeal Bars
• Easy Baked Oatmeal
• Maple Pecan Baked Oatmeal
• Baked Steel Cut Oatmeal
• 5 Ways to Make Protein Oatmeal
• Old-Fashioned Oatmeal Cake

Be sure to check out all of the smoothie recipes and all of the oatmeal recipes here on EBF!