Smoothie Cake – Sugar Free, Gluten Free, Vegan Birthday Cake {Giveaway}

smoothie cake gluten fre sugar free

smoothie cake gluten fre sugar free

Have you ever heard of a smoothie cake before? Basically it’s very much like an ice cream cake, but made with smoothie instead of ice cream. Yes, a hard concept to wrap your head around, I know. Why change up something as perfect as ice cream cake?

Let me tell you why. Ice cream, while delicious, is full of sugar. Sugar presents a variety of problems when included in human diets, especially when the human is your child and you are happier when they are calm and able to control their bodies and voices (or, as able as they ever are, anyhow). We learned the hard way during our family travels in Colombia that sugar has some pretty phenomenal effects on tiny little bodies and systems that aren’t used to the energy overload. “Sure, we’re on vacation” got used a few too many times, and while a lollipop offered to your child might quell the storm in the moment, it’s a sure fire way to make moods, listening and cooperation skills, and energy levels go all haywire.

toddler loves smoothies
What toddler doesn’t love a good smoothie?

Before the trip that ruined my toddlers blissful ignorance of sweets and sugar, we were very careful to keep sugar – especially refined sugar – out of her diet. When other parents were dealing with meltdowns and frustrations after doling out chocolates and cotton candy, we held strong to our commitment to keep our little one sugar-free. Oh, how I miss those days. Once you taste that sweet, sweet deliciousness, you can never go back. We try to keep the sweets to a minimum, but have you ever tried telling a toddler who has tasted the sweet nectar, that they can’t have a cookie when you yourself are inhaling one? Not an easy task, my friends. You may find yourself ducking behind counters and in closets shoving oreos in your slobbery little trap to keep your little one from catching you.

But, let’s get back to the smoothie cake recipe.

For my daughter’s first birthday I tried my hand at sugar-free, gluten-free, vegan cupcakes (if you know someone who is a celiac, or you live on health-conscious Salt Spring Island, gluten-free and vegan is a must for gatherings). While the whipped topping was deliciously sweetened with flavoured stevia, the cupcakes were absolutely awful. I can only blame myself because, as usual, I “tweaked” the recipe to suit my needs without properly substituting. Oops.

When Z’s second birthday rolled around, I had a new plan for a cake that everyone could eat. Having seen and tasted the most beautiful smoothie cake at another baby’s birthday party, I knew I had to try it for our own celebration.

Smoothie Cake Recipe – Sugar-free, gluten-free and vegan

I’m not going to complicate things for you. The basic method to making a smoothie cake is to make a smoothie, pour it into a cake pan, and freeze it. Voila! Smoothie cake!

Because I wanted to replicate the beautiful coloured layers of the first smoothie cake we experienced, we made the cake over a period of a few days, to give each layer time to freeze. This worked well, since each day I could offer my toddler a bit of healthy smoothie as a snack. We made four different layers: green, yellow, purple and red.

Since the cake was supposed to look like a field on top, as a base for the little farm animals for Z’s farm-themed birthday party (I know it sounds like it might have been a well-put-together party – trust me, I’m not that mom, I just slapped a couple semi-farmy things together in a room), we made the green layer first. You see, it would be the flattest part, so when taken out of the pan and flipped over, the green would be on top.

green smoothie cake layer

To make the green smoothie we used:

  • Frozen spinach (sometimes I use fresh spinach or kale)
  • Frozen mangos
  • Apple pieces
  • Quinoa flakes
  • Orange juice (make sure all juices are 100% real fruit juice to avoid added sugar)
  • NuStevia No Carb Blend stevia powder

NuStevia No Carbs sweetener

To make the red layer:

  • Frozen raspberries
  • Frozen strawberries
  • A “red” fruit juice (raspberry something-or-other)
  • Quinoa flakes
  • Coconut milk

how to make smoothie cake

To make the yellow layer:

  • Frozen mangos
  • An ‘orange” juice (wasn’t straight up orange)
  • Banana
  • Quinoa flakes
  • Coconut milk

purple smoothie in blender

To make the blue purple layer (a naturally coloured blue smoothie is not an option, I quickly realized, seeing as blueberries are not truly blue):

  • Frozen blueberries
  • Frozen blackberries (some we had frozen from our summer berry picking escapade)
  • Blueberry juice (again, not really blue, but more of a light red-purple colour)
  • Coconut milk
  • Powdered hemp hearts
  • Vanilla NuStevia liquid stevia


The cake turned out to look pretty cool, if I do say so myself, and tasted delicious (once we got it cut and it had a chance to thaw a bit). There were a bunch of comments on how unique and cool it was. After everyone had eaten their slice, we cut the remaining cake into pieces and wrapped them in plastic wrap to keep in the freezer. This made for a few easy-smoothie days later on, where I could grab a piece of frozen smoothie cake for myself and my toddler to share in a bowl. If we let the cake thaw for long enough, it turned into a liquid smoothie bowl (like a smoothie soup) which we could eat on it’s own, or with “sprinkles” (omega seeds), cereal, and whatever else sounded good.

farm themed birthday smoothie cake

Here are some tips for making a smoothie cake:

  • What I learned with trying to achieve certain looks of the smoothie is that, for a creamier, more pastel coloured smoothie, add more coconut milk, banana, and (to a lesser degree) quinoa flakes. If you’re not worried about the cake being vegan, you can easily use yogurt or cow’s milk instead.
  • Quinoa flakes make for a nice creamy texture that’s not as solid as straight frozen liquids, and not as grainy as cooked quinoa (an alteration I’ve made to my toddler’s quinoa popsicles, too). Plus, quinoa is packed with protein, so I love to sneak it in.

smoothie cake layers

  • Allow a period of time between adding each layer to allow for proper freezing, so the colours don’t mix. Adding a new layer every 4-24 hours worked well.
  • If your blender is having a hard time blending, it probably needs more water/milk/juice/liquid added.
  • Use stevia liquid sparingly. You can always add more as needed. Stevia is a natural sweetener that I’ve come to love, but it’s much sweeter than sugar, so you really don’t need much more than a few drops for a full blender. I know, smoothies can be delicious without sweetener, but since this was a cake I wanted to make sure it had a “special occasion” sweetness.

spring-form cake pan

  • A spring-form pan was the perfect tool for casing the in-progress smoothie cake.
  • Remember to take the cake out well ahead of the time you want to cut and serve it. We brought it out a half-hour before attempting to cut, and had it sit in a sunny spot, but this wasn’t quite long enough. Next time I would lean towards 1-1.5 hours at room temperature to thaw before cutting. It tastes better once it’s thawed a bit, too.


Have you tried a smoothie cake before? I’m interested to hear your experience, any tips, and see how yours turned out. Use the comment section below to tell me all about it, or connect with me on Facebook, Twitter, or Instagram. I’ve also recently hopped over to Periscope, too, so you could always share your experience with me that way, too!

NuStevia Giveaway!


Want to try natural stevia liquid sweetener for yourself? I’ve been using NuNaturals and NuStevia stevia products for over a year now, and have nothing but good to say about them (you can read more about the products and what I use them for here, here and here). The awesome people at NuStevia have given me the go-ahead to offer up another set of their fabulous giveaway packages to you lucky readers! Enter using the Rafflecopter form below for your chance to win 1 of 4 NuStevia prize packs. Each prize pack includes one bottle of the Vanilla NuStevia Liquid, a bottle of sugar-free cocoa syrup (great for chocolate milk!), & a bottle of sugar-free mint cocoa syrup, plus a 50 packet box of NuStevia No Carb Stevia packets. In addition, each of the 4 winners will also receive a free bonus prize. The total retail value of each package is $70.00.

sugarfree sweetener giveaway

In addition, you can use the discount code BLG0616 (which remains in effect until JUNE 30, 2016) to order anything from the NuNaturals website: The code will get you 15% off your entire order, but you can’t combine it with other discounts.

Giveaway open world-wide. Prizes can not be shipped to P.O. boxes.

a Rafflecopter giveaway

*Disclosure* The sweet people at NuNaturals (see what I did there?) have generously donated the giveaway packages to the 4 lucky winners, seeing as I used some of their tasty stevia products in this delicious creation. Therefore, the giveaway is sponsored, but the post is not. (Although, I should probably let you know that NuNaturals has sent me a bunch of free products over the last year, so that’s pretty cool.) You can read my full disclosure statement here.

Smoothie cake sugar-free gluten-free vegan

43 thoughts on “Smoothie Cake – Sugar Free, Gluten Free, Vegan Birthday Cake {Giveaway}

  1. Donna Wilson

    I recently lost weight and am trying to maintain my low-carb eating. I have a sweet tooth and would love to try some of these delicious sounding NuStevia flavorings in my baking.

  2. ginette4

    I would love to try this because my husband is diabetic and I would love to bake with this product to see if he likes it

  3. Bailey Dexter

    I would love to make a few things with this. The first would be the Almond Butter Chocolate Banana Smoothie from their site. Our family is gluten free & this sound like a perfect addition to bake with as well!

  4. Melanie Borhi

    id like to try this out cause I would like to try out some dessert recipes and substitute this in to cut down on sugar intake as I am on an special diet.

  5. Christine Holliday

    I have used Stevia in the past..I found it too bitter. I strongly suspect though that this one might be better.

  6. Ally G.

    I want to try NuStevia because I have not tried it before, and I would really like to replace sugar in my household with a healthier alternative. Thank you for the great recipes and inspiration.

  7. debern

    Great creative cake and with quinoa flakes, who knew?! I have made great progress removing most of the sugar from my diet. I’ve tried the blends but want a good all-stevia substitute to sugar that is actually sweet with a small amount. This is a must-pin cake recipe for me! Thanks.

    1. Hannah Post author

      They are! I have gotten so much great use out of them, and my toddler loves adding a drop of Vanilla liquid NuStevia to her milk with cinnamon for a special drink, as well as in yogurt, coffee, baking…. so many great uses!

  8. trishden

    I would like to try these NuNaturals stevia products because since an illness I have had to cut out all sugar. I have used some of their products and liked them but I have never tried their syrups or vanilla flavored stevia and would love to. Thanks for a great giveaway!

  9. maureen

    I would like to try because my husband’s father had diabetes. We want to sweeten or food but naturally and with something that is not going to raise the blood sugar. My husband is likes his sweets but is very careful about what he eats.

  10. DeeAnn S

    I’m cutting most of the sugar out of my diet and this looks like a great alternative. I’m especially interested in the Cocoa Mint Syrup! Thanks.


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