Gluten-Free Vanilla Zucchini Cake [high-protein + no added sugar]

If you’ve ever tried to make a “healthy” cake and ended up with something that tastes like sweetened cardboard, this is your redemption recipe. This gluten-free vanilla zucchini cake is soft, lightly sweet, packed with protein, and secretly loaded with veggies. Yes, zucchini. No, you won’t taste it.

This is the kind of recipe you make once, and then suddenly you’re buying zucchini every week like it’s your job.

Why You’ll Love This Zucchini Cake

This isn’t just another gluten-free bake that falls apart when you look at it wrong. It’s:

• Fluffy and moist with a true cake texture
• Naturally sweet and warmly spiced with cinnamon
• Packed with protein thanks to whey
• An easy one-bowl situation
• Perfect for breakfast, snack, or “I deserve cake at 3 pm” moments

And bonus, it’s a great way to use up that zucchini sitting in your fridge pretending to be aspirational.

Ingredients You’ll Need

• 2 scoops True Nutrition French Vanilla Whey Protein (60 grams)
• 2 tbsp coconut flour
• ¼ cup gluten-free oat flour (27 grams)
• ½ cup liquid egg whites
• ½ cup grated zucchini (125 grams)
• ¼ cup unsweetened vanilla cashew milk
• 1 tsp cinnamon
• 1.5 tsp baking powder
• 1 tsp vanilla

How to Make Gluten-Free Vanilla Zucchini Cake

1. Preheat your oven to 350.
2. In a bowl, combine all the dry ingredients until evenly mixed. Add in half of the grated zucchini along with the egg whites, cashew milk, and vanilla. Blend everything together until smooth.
3. Stir in the remaining grated zucchini for that perfect moist texture.
4. Pour the batter into a parchment-lined 8×8-inch baking dish and spread evenly. Bake for 20 to 24 minutes, or until the center is set and a toothpick comes out clean.
5. Let cool slightly before slicing if you can wait that long.

Print

Tips for the Best Zucchini Cake

• Don’t overmix once everything is combined or you’ll lose that soft crumb
• Finely grate your zucchini so it melts into the batter
• No need to squeeze out the zucchini moisture; it helps keep the cake tender
• Use a high-quality vanilla protein for the best flavor payoff

Easy Ways to Level It Up

This cake is great as-is, but if you want to make it feel a little extra:

• Add a light vanilla glaze or Greek yogurt drizzle
• Toss in white chocolate chips or blueberries
• Top with a swipe of almond butter or cashew butter
• Sprinkle with extra cinnamon right out of the oven

How to Store

Store leftovers in an airtight container in the fridge for up to 4 days. You can also slice and freeze for easy grab-and-go pieces during the week.

The Bottom Line

This gluten-free vanilla zucchini cake is proof that healthy baking doesn’t have to be boring. It’s simple, satisfying, and just indulgent enough to keep things interesting.

And yes, you can absolutely call this breakfast.

65 responses to “Gluten-Free Vanilla Zucchini Cake [high-protein + no added sugar]”

1. I’ve made zucchini bread, muffins, brownies, cookies…,but not cake!!!! Genius! This looks SO yummy!!!

   • Thanks Laura! Let me know if you try it!

2. I love zucchini and I have never tried it in a cake! Looks delish!

   • Thanks Zena! Enjoy!

3. Looks really good and sounds so healthy! I love zucchini recipes!

   • Thanks Michelle!

4. I love zucchini in baked goods, and this looks so fluffy and wonderful!

   • Thanks Courtney!! It’s a fave of mine!

5. I love the way you say “you can feel good about having a piece” rather than calling it guilt-free or sinless. Way to emphasize the positive, and this cake looks like it deserves alllll the positive vibes 🙂 Yum!

   • Always have to accentuate the positive! 😉

6. Hi Kaila,
   Zucchini cake is always so moist and delicious and this sounds like a healthy, tasty recipe. Thanks for sharing on Real Food Fridays. Pinned & tweeted!

7. This looks totally yummy! I’m always glad to find another coconut flour recipe, too, as I bought a huuuuge bag a little ways back not realizing how hard it’d be to use it up! 😛

   • I love using it! You’ll love it in this!

8. I love zucchini in baked foods! This sounds great 🙂

   Blessings,
   Edye

   • Thanks Edye!

9. I LOVE zucchini! This looks so good!

   • Thanks Annmarie!!

10. […] GET THE RECIPE […]

11. Using protein powder in a cake is always a good idea, because it lends a sweeter flavor without having lots of extra sugar. I’m not against sugar at all, but sometimes I like something less sweet. And the way you described this, ‘sweet and fluffy’ caught me right away!

    • Exactly! And a little less sweet means you can go CRAZY with toppings!!! 😉

12. Yumm- this sounds amazing Kalia! Cooking with zucchini always leads to something yummy in my opinion 🙂

    • I totally agree!! One of my favorite ingredients for sure.

13. Thank you for sharing this delicious recipe at the #RecipeSharingParty! I hope to see you next week. Pinned and Yummed. Please visit #OverTheMoon on Sunday or #ThursdayFavoriteThings for more sharing fun! Don’t forget to Comment your link #’s so I can be sure to visit and you get a chance to be featured!

    • Thank you M!

14. Sooo brilliant! I could see this glazed with some chocolate coconut oil frosting for a decadent dessert, or Chia Jam for a fun breakfast! Either way, I’m saving this recipe because YES.

15. Sooo brilliant! I could see this glazed with some chocolate coconut oil frosting for a decadent dessert, or Chia Jam for a fun breakfast! Either way, I’m saving this recipe because YES.

    • YES! It would be amazing with any of those!!!

16. cakes that freeze well?! bonus!!

    • My thoughts exactly!

17. I can never get enough of zucchini – but especially zucchini in baked goods! This looks delicious!

    • Thanks Kristy!

18. Kaila I need to make this. It looks delicious. I’ll be home tomorrow and I think I have everything I need to make it.

    • Let me know if you do! 🙂

19. First time reader here, stopped over from fitness friday link up with Jill. Love zucchini! I love this time of year and all of the fresh local fruit and veggies! Summer is too short!

    • Thank you so much for stopping by!

20. I’ve never tried making cakes with zucchini but as I’m gluten-free I really should experiment more. It certainly looks very tasty X #TastyTuesdays

    • Thanks Lins! Enjoy!!

21. I love baking with zucchini and this cake looks like the perfect afternoon snack, or even breakfast! Love the vanilla flavor and that it’s whole grain too 🙂

    • Thanks Kathryn!!

22. Looks great! I love coconut flour – Thanks for joining the What’s for dinner link up!

    • So welcome! I love your link up!

23. Can you substitute the proiten powder?

    • You could try it but I never have so I can’t guarantee it would work!

24. This looks and sounds so delish! I bet it would be great with my morning coffee, yeah, the cup I’m drinking right now would love to have a slice of this setting beside it! Zucchini makes everything so moist and the vanilla flavor would be perfect!

    • Yes it would be perfect with a nice hot cuppa!

25. Wow, such a simple and easy recipe to follow that i have bookmarked to try out X #brilliantbloposts

    • Thanks dear!

26. Healthy and delicious!
    Thank you!
    Thank you for sharing this with us at Thoughts of Home.

    • Thank you!!

27. This looks so yummy!! I have been seeing tons of recipes using zucchini! I will be trying this out soon!

    • Yay!! Let me know how you like it!

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33. I haven’t experimented baking with whey protein but am looking forward to testing these out! Sounds delicious!

    • It’s so awesome for baking!!

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36. […] Kaila’s Vanilla Zucchini Cake: – This is one of the lightiest, fluffiest cakes I’ve ever eaten.  It went well with some delicious Bhappy Peanut Butter and jam.   […]

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39. Thanks for sharing at the What’s for Dinner party – hope to see you there tomorrow too!

    • Thanks Helen!!

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