5 from 8 votes

Healthy Birthday Cake Smoothie

 May 9, 2021

A nutritious, protein-packed smoothie that actually tastes like birthday cake? SIGN ME UP! Actually, sign YOU up! If there’s one thing you should know about me, it’s that I don’t mess around when it comes to smoothies. I drink 1-2 smoothies each day (usually breakfast and post-workout), each carefully proportioned to make sure that my creations taste amazing. This birthday cake smoothie is simply delicious – you’ll think it’s your birthday every time you make it! 

What you need to make this creamy, plant-based birthday cake smoothie

To make this smoothie, you’ll see that the ingredient list is super simple, and of course you can make substitutions based on what you have on hand at home. However, if you want your cookie to actually taste like birthday cake, I recommend that you use the ingredients that I have listed.

For instance, I know many people don’t have almond extract laying around at home. I think it’s totally worth buying, because it doesn’t taste like almonds – it tastes like a sugar cookie…hence it’s addition to this birthday cake smoothie. You can use vanilla extract instead, no worries – just know it will taste a bit different than the recipe I created.

  • Banana: I always love frozen bananas in my smoothie! I know that diet culture tells us to avoid bananas, but what gives? They are full of potassium and provide a ton of energy from natural sugar! 
  • Rolled Oats: If you are strict gluten-free, make sure that you purchase oats that are labeled as gluten-free. You can use quick cut or regular, it doesn’t matter; but you cannot use steel cut oats.
  • Cashew butter: Cashew butter is key in a birthday cake smoothie. Of course you can sub for other nut butters and even seed butters, but the cashew butter helps with the birthday cake taste!
  • Maple syrup: We only need a dash of maple syrup, but don’t omit it. Again, this is an ingredient that contributes to the overall flavor of birthday cake. 
  • Almond extract: I wish almond extract was more popular. It’s so underrated, but damn, it tastes so good. Per my note above, almond extract tastes like a sugar cookie, and I use it in so many things…even my Black Forest Smoothie
  • Oat milk: You can use any non-dairy milk you’ve like, I recommend oat.
  • Vanilla protein powder: You can use any protein powder you like – I’ve linked my favorite vanilla-flavored protein powder for you below, so be sure to snag that! 

How to make this delicious birthday cake smoothie

I feel like it’s always a little goofy when bloggers spend an entire paragraph telling people how to make the smoothie. It’s quite simple. BLEND. And adjust the liquid as needed until you reach your desired consistency. Voila, simple!

Looking for other smoothie options? Check out these KJ smoothies!

I am a smoothie lover, so here are a few other KJ smoothie creations I know you will love!

Creamy Tropical Green Smoothie

Black Forest Smoothie

Peanut Butter & Jelly Protein Smoothie

Creamy Cinnamon Roll Smoothie

Snickerdoodle Tahini Smoothie

Peanut Butter Cold Brew Smoothie

If you make this recipe, be sure to leave a review and a rating below. This helps others decide whether to make my recipes, and also helps it appear in Google searches – so thank you for supporting me! And also, since I practically live on Instagram, feel free to tag me in your creations, so I can see them and repost on my IG stories! Enjoy! xx 

Healthy Birthday Cake Smoothies

5 from 8 votes
Nicole Modic
Prep Time 5 minutes
Cook Time 0 minutes
Total Time 5 minutes
Print It Pin It
Say hello to your new favorite smoothie recipe: Healthy Birthday Cake Smoothie! This smoothie truly does taste exactly like birthday cake, and it's packed with protein, and nutritious ingredients to help keep you full for hours. And, I highly recommend the sprinkles - sprinkles make people happy, end of story!


  • 2 frozen bananas
  • ¼ cup gluten-free rolled oats
  • 2 tablespoons cashew butter
  • 2 tablespoons maple syrup
  • ¾ teaspoon almond extract
  • 1 ¼ cups oat milk
  • 2 scoops vanilla protein powder of choice


  • Blend all ingredients in a high speed blender, adjusting the liquid amount as needed until you reach your desired consistency. Note, you might have to remove the lid and scrape down the sides of the blender a few times, until everything is blended perfectly. Enjoy!

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Rate + Review

5 from 8 votes (2 ratings without comment)

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  1. 5 stars
    Omg so yummy 😋 sweet and delicious 🤤 definitely going to make it again and again! Thank you Nicole for creating so many delicious smoothie recipes … this one is a keeper too like many of your other smoothie recipes.

    • Woohoo! Thank you so much for making all of my smoothie recipes, Agnes! Your reviews make my day!

  2. 5 stars
    YUM! I just made this smoothie & it was such a treat. I didn’t add rolled oats, so I added flaxseeds, chia seeds, & hemp seeds. Thank you for another delicious smoothie Nicole. Xoxo.

    • YAY! Christin, I am thrilled that you loved this recipe! Thank you so much for making it, and for leaving the kindest review!

  3. 5 stars
    Absolutely LOVE this smoothie. I had never thought of using almond extract but it adds the best flavor! I love it according to the recipe but I have also been adding some frozen cranberries and love the zing they give. YUM!

    • Isn’t the almond extract so yummy?! Thank you so much for making this recipe, Eloise, and for leaving such a sweet review!

  4. I made this for breakfast this morning! I added a 1/2 cup of cauliflower and some spinach to mine for some extra sneaky nutrients. Next time I might leave out the oats, but other then that it was awesome. Highly recommend the maple syrup even if you think it tastes sweet enough as it- the flavor it adds is delicious! 😋

    • That sounds delicious Carynne! So happy it worked out so well for you, and thank you so much for your review!

  5. Hey! I made this smoothie tonight but instead of vanilla protein powder I just used some vanilla extra, it was so good! And actually does taste like cake batter!