Oatmeal Smoothie


This protein-packed oatmeal smoothie tastes like a cinnamon oatmeal cookie, but it’s super healthy and filling. Plus, it’s made with only 6 simple ingredients!

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!

Cinnamon oatmeal cooke protein smoothie in a glass topped with granola and a peanut butter drizzle. Glass is on a striped napkin.

Ingredients Needed:

The best part is that you can get all of the ingredients for this smoothie at your local grocery store. No fancy ingredients here! And lastly, this smoothie takes less than 5 minutes to whip up.

  • frozen banana – frozen banana helps thicken the smoothie and adds a little sweetness.
  • 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. 
  • vanilla protein powder – I love adding protein powder to my smoothies to make them more filling! I think the vanilla flavor blends really with this particular smoothie. I like using Nuzest protein powder. You can use my code eatingbirdfood for 15% off your order.
  • cinnamon – for a bit of sweet spice and oatmeal cookie flavor!
  • vanilla extract – a great flavor enhancer! 
Cinnamon oatmeal cooke protein smoothie in a glass topped with granola and a peanut butter drizzle. Glass is on a striped napkin.

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, quite hard and will be harder to blend and more difficult to digest.

Cinnamon oatmeal cooke protein smoothie in a glass topped with granola and a peanut butter drizzle. Glass is on a striped napkin.

Love All Things Oatmeal? Try These Recipes

More Healthy Smoothie Recipes:

Oatmeal Smoothie

4 from 16 votes
A healthy and protein-packed smoothie that tastes like a oatmeal cookie with a hint of cinnamon. Vegan, gluten-free and perfect for refueling after a workout.
Cinnamon oatmeal cookie protein smoothie in a glass topped with granola and a peanut butter drizzle. Glass is on a striped napkin.
Prep Time 5 minutes
Servings 1


  • 1 frozen banana, (chopped into chunks)
  • 1/2 cup unsweetened almond or oat milk
  • 3 Tablespoons old fashioned rolled oats
  • 1 scoop scoop protein powder
  • ½ teaspoon cinnamon
  • ½ teaspoon vanilla extract


  • Blend: Place banana, milk, oats, protein powder, cinnamon, and vanilla in a high-powered blender and blend until smooth.
  • Taste: If the smoothie is too thick, add a little more almond milk.
  • Serve: Pour into a glass or bowl (depending on whether you want to use a spoon or straw) and top with your favorite smoothie toppings.


  • frozen banana – don’t forget to peel your bananas before you freeze them and chopping them in chunks will help make the smoothie easier to blend!


Serving: 1 Calories: 265kcal Carbohydrates: 43g Protein: 19g Fat: 4g Fiber: 7g Sugar: 16g
Course: Smoothie
Cuisine: American
Keyword: oatmeal cookie smoothie


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Recipe Rating

    1. Shawna
      July 8, 2021 AT 10:03 am

      5 stars
      This was absolutely delicious!

      1. Brittany Mullins
        July 8, 2021 AT 10:18 am

        Yay! I’m so glad you enjoyed this smoothie, Shawna! Thanks so much for making it and coming back to leave a review. I really appreciate it!

    2. TeresaThorne
      June 29, 2021 AT 9:53 am

      5 stars
      12 hour travel day yesterday and this recipe hit the spot.
      I added some moon balance powder as well

      1. Brittany Mullins
        June 29, 2021 AT 11:55 am

        Woo!! So glad it was able hit the spot on your long travel day. Thanks so much for the review, Teresa! I really appreciate it!

    3. Jennifer B.
      June 28, 2021 AT 11:34 am

      5 stars
      I’m still giggling because I feel like I had a cookie milkshake for breakfast! Super proud I remembered to add some collagen this time…Brittany this is simply brilliant! Thank you SO MUCH for another scrumptious & healthy delight!

      1. Brittany Mullins
        June 28, 2021 AT 12:43 pm

        Aw! I’m so glad you enjoyed this smoothie, Jennifer! Thanks makes me so happy to hear how much you enjoyed it! Thanks for the review 🙂

    4. Molly
      June 25, 2021 AT 9:48 am

      5 stars
      I had 2 medjool dates to use up so I used those instead of banana and added peanut butter. It tasted wonderful 🙂

      1. Brittany Mullins
        June 25, 2021 AT 10:59 am

        Yay! So glad this smoothie was a hit, Molly! Thanks so much for trying it and coming back to leave a review!

    5. Amy B
      June 17, 2021 AT 11:17 am

      5 stars
      This taste just like an oatmeal cookie!!!!!super delicious! I didnt expect to like it as much as I do!!!!

      1. Brittany Mullins
        June 18, 2021 AT 11:26 am

        Ah yay! I’m so pumped this smoothie was a hit, Amy!! Thanks so much for the review 🙂

Parchment paper lined with protein balls.


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