Secret Ingredient Healthy Smoothie

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You will never know this smoothie is packed with healthy ingredients because it is SO delicious! It is a favorite Breakfast and Snack at our house, even the kids love This Smoothie Recipe!

Healthy Smoothie Recipe

Best Smoothie Recipe

Today, I am sharing a secret with you. Are you ready? I am sharing the BEST smoothie recipe that is full of secret ingredients. But you have to promise not to tell anyone what the secret healthy ingredients are. Pinky promise? Good, it will be our little secret.

You see, I make this healthy smoothie recipe for my boys ALL the time and they LOVE it, but they have no idea what is in it. They actually beg for this smoothie for breakfast almost every single day. And every time they see me making it for myself, they get out their cups because they want some. They usually drink it all so I have to make another one:) It is that good!

Easy Smoothie Recipe

Smoothie Ingredients

So what are the secret ingredients in this healthy smoothie recipe?

  • Unsweetened vanilla almond milk or homemade kefir-I love using my homemade kefir or unsweetened vanilla almond milk. Feel free to use your favorite milk.
  • Spinach or kale-Add greens! I like to use spinach leaves or kale. Make sure you add a packed cup. You can’t taste the greens, I promise so don’t skip them! This smoothie is a great way to sneak in some greens!
  • Frozen cauliflower-Yes, CAULIFLOWER! This is the ultimate secret ingredient. Frozen cauliflower adds a nice texture to the smoothie and you can’t taste it at all! Use frozen cauliflower or frozen cauliflower rice. Frozen cauliflower is easier on the digestive system than fresh cauliflower and it makes the smoothie thick and creamy. I promise no one will ever know it is in there. My boys don’t have a clue!
  • Frozen blueberries-I use frozen blueberries because they are cheaper year round and I can always have them on hand. Blueberries are low in calorie but high in nutrients and antioxidants. They are a superfood and a great addition to this smoothie. Plus, the blue color helps hide the greens in this smoothie…if you or your kids are afraid of drinking anything green:)
  • Banana-Use a ripe or overripe banana for optimal results. You want the banana to be nice and sweet. You can use a fresh or frozen banana. Pro tip, if you have a bunch of overripe bananas, peel them, cut them into pieces and put them in a freezer bag. That way you always have bananas to make this smoothie.
  • Chia seeds-These tiny seeds pack a powerful nutritional punch. Chia seeds add good quality protein, fiber, and omega-3 fatty acids, and more!
  • Ground Flaxseed-Another great nutrition addition! Just make sure you are adding ground flaxseed or flaxseed meal.
  • Protein powder-The protein powder is optional, but I like to add vanilla protein powder to my smoothie before or after a workout. is my favorite. Clean Simple Eats protein powder is my favorite brand. The vanilla flavor tastes amazing, one scoop has 20 grams of protein, and the label is super clean. I also love the vegan protein powder.

I bet you have most of these ingredients in your kitchen. If not, it is time to stock up so you can make this smoothie all of the time! And if you want to add in a few more secret ingredients, here are a few other ideas:

This smoothie recipe is easy to customize, pack it full of all of your favorite healthy ingredients.

How to Make a Healthy Smoothie

You need a blender to make this smoothie recipe. I really love this blender and this one. Both are powerhouses and will blend the smoothie with no problem. If your blender isn’t super powerful, that is fine, you will just have to blend for longer and maybe add a little more liquid. I would also recommend using frozen cauliflower rice and a fresh banana because it will blend easier than frozen cauliflower florets and a frozen banana. You might have to stop the blender and stir it and blend again. Just make sure you blend until all of the ingredients are blended well. You don’t want any pieces of spinach or chunks of cauliflower in your smoothie:)

This smoothie only takes a few minutes to make, making it the perfect healthy breakfast or snack! Place all of the ingredients in the blender, put the lid on tightly and blend until completely smooth! If the smoothie is too thick for your liking, add a little more liquid and blend again until desired consistency is reached. I personally like a thick smoothie.

This recipe makes a really big smoothie or two smaller smoothies. If I am making it for our boys, they always share this smoothie. Pour into glasses and sip away. And if you need a good smoothie straw, these are my favorite reusable straws.

Get out your blender and make this healthy smoothie TODAY! I promise you will never know it is packed with healthy ingredients because it is SO delicious! CHEERS!

More Easy Smoothie Recipes:

Smoothie Recipe
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Secret Ingredient Smoothie

You will never know this smoothie is packed with healthy ingredients because it is SO delicious! It is a favorite at our house, even the kids love it! 
4.63 from 8 votes


  • 1 1/4 cups unsweetened vanilla almond milk (or milk of choice or kefir)
  • 1 banana peeled (fresh or frozen)
  • 1 cup frozen blueberries
  • 1/2 cup frozen cauliflower florets
  • 1 cup packed spinach leaves
  • 1 teaspoon chia seeds
  • 1 teaspoon ground flaxseed
  • 1 scoop vanilla protein powder optional


  • Place the milk, banana, blueberries, cauliflower, spinach, chia seeds, ground flaxseed, and protein powder, if using, in a blender. Blend until smooth. If the smoothie is too thick, you can add a little more milk or water and blend again until desired consistency is reached. Pour into a glass or two glasses and serve immediately.


Serving: 1g, Calories: 283kcal, Carbohydrates: 55g, Protein: 6g, Fat: 6g, Sodium: 449mg, Potassium: 863mg, Fiber: 11g, Sugar: 30g, Vitamin A: 2970IU, Vitamin C: 58.8mg, Calcium: 442mg, Iron: 2.1mg
Keywords smoothie, smoothie recipe

Have you tried this recipe?

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I'm Maria and my husband is Josh. We share a love of cooking, baking, and entertaining. We enjoy creating recipes that are simple, fresh, and family friendly. We love sitting around the table with good food, good conversation, and good friends and family! Our kitchen is always open!
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  1. Wait, can you explain how frozen cauliflower is easier to digest than fresh? How does freezing change that? So curious right now.

    1. It’s blanched and frozen so it doesn’t have a strong flavor, I promise you can’t even taste it!

  2. Frozen Cauliflower! I’m not sure where I’d even buy that from? Great recipe though, will have to give it a blast 🙂

    1. That’s why she said frozen cauliflower rice…it’s also florets frozen like broccoli in the frozen food section. You could start with your local food store’s frozen section if they don’t have either try to find a larger food store.

  3. 5 stars
    I think I’ve used all of these ingredients at least once in a smoothee except frozen cauliflower, wow, never imagined or occurred to me even though its a staple in other things I make especially for my diet but a great way to get my dose of cauliflower since raw it’s tasteless and too fibrous so thank you

  4. Hey! MARIA, If I take papaya instead of banana, will it be tasty and healthy?
    By the way, I like your secret ingrediant recepi. I have my blog also where I reveiwed about some blender: . May be it helps you to find some new one!

  5. Hi Maria! I always enjoyed reading your blog and you’re a Recipes and I’ve tried some of the recipes. But the recipe for the spinach in the blueberry smoothie is much too rich for a type two diabetic . How about coming up with a more reasonable smoothie for type two diabetics. We would all be very appreciative

  6. 5 stars
    Seriously LOVE this recipe! The cauliflower makes this smoothie so creamy and you are right when you say you cannot tell its in there! I have been making this base recipe every morning before work since I first saw it! I buy riced cauliflower and use a half of cup and its spectacular! Didn’t have chia seeds so I added a teaspoon of nutritional yeast to get B12 since I’m vegetarian. Thanks for another wonderful tip!

  7. 2 stars
    I love the idea of this but it really was not tasty. I wanted to like it. I think the vanilla almond milk I used overpowered the fruit. It did not taste like cauliflower and I do love greens in my smoothie, but I could not taste any fruit. I will say it was very filling. I think I will try adding the cauliflower to my protein shake to boost fiber and nutrition and see how that goes.

  8. 5 stars
    I have not tried it yet but sounds amazing and I cannot wait to try it.!
    Never thought of adding nutritional yeast before in a smoothie. I’m wondering what it did for the taste.?
    I’m also a diabetic #2 and I don’t understand why the other reader said it was not healthy for us…but I’m still going to try it… can’t wait and thanks so much for sharing !

  9. 5 stars
    I tried this recipe without the protein powder. It was delicious! The cauliflower kind of added a nutty flavor but other than that was undetectable. Great recipe!