These flourless protein brownies are fudgy, decadent, and delicious. They're naturally gluten-free and vegan, made without refined sugar, and packed with zucchini!
For another delicious zucchini-and-chocolate recipe, give this rich chocolate zucchini bread a try next.

One of my favorite treats used to be slightly underbaked boxed brownies. I loved how gooey they were, how sweet they were, and how decadent they tasted.
I've since started experimenting with homemade brownies, using different ingredients to create that same rich, fudgy texture. And there's something so fun about making brownies from scratch!
That's exactly why I love these Flourless Protein Brownies – they're everything I enjoy about gooey, decadent brownies, made with a fun twist on the classic recipe!
Ingredients for these Flourless Protein Brownies
Making flourless brownies at home is actually pretty simple. We're using a base of banana, cashew butter, and a flax egg, which adds moisture, helps bind everything together, and provides some sweetness. Then we added in some coconut sugar and raw cacao powder. That's our base.
When I first made this recipe, I left it at that. But the first batch came out a little too gooey for me. So I went back to the drawing board, and the next time I added some protein powder.
That was just what it needed! The protein powder helped absorb a little bit more moisture, and the texture was just what I wanted. The result is a rich, fudgy brownie with a texture I absolutely love!
Why Add Zucchini to Brownies?
Okay so we have our basic flourless protein brownie, but I figured why not kick it up a notch!?
Instead of just keeping them plain, we're also adding in some shredded zucchini and chocolate chips. The chocolate chips are self-explanatory (more chocolate is always better!), but the zucchini? That might seem a little strange…
But let me tell you, zucchini is awesome in brownies! And here's why:
- it adds a ton of moisture making them fudgier
- it blends right into the brownie batter
- you barely notice the zucchini flavor
- you're adding extra veggies
It's a no brainer in my eyes!
The Best Zucchini Brownies EVER!
So truly, these are the best zucchini brownies (aka flourless protein brownies) EVER! They're vegan, gluten-free, refined sugar-free, made in just one bowl and use just 10 ingredients.
They're a cinch to make, they're totally decadent and so delicious!
More Vegan Gluten Free Brownie Recipes:
- Vegan Almond Butter Brownies
- Fudgy Salted Quinoa Brownies
- Vegan Quinoa Flour Brownies
- Raspberry Quinoa Brownies
- Vegan Nutella Brownies
Flourless Zucchini Protein Brownies

Ingredients
- 1/2 cup cashew butter
- 1/2 cup mashed banana
- 1 flax egg
- 1/2 cup coconut sugar
- 1/2 cup cacao powder
- 1/4 cup protein powder
- 1/2 tsp baking powder
- 1/2 tsp salt
- 1 cup shredded zucchini , measured unpressed (3/4 cup pressed)
- 1/3 cup chocolate chips
Instructions
- Preheat the oven to 350ºLine an 8x8 baking pan with parchment and grease the uncovered sides with cooking spray. Set aside.
- Add the cashew butter, banana, flax egg, and coconut sugar into a bowl. Beat until smooth. Stir in the cacao powder, protein powder, baking powder, and salt.
- Place the shredded zucchini in a clean dish towel and press out as much liquid as possible (do this over the link). Add the zucchini and chocolate chips into the bowl and fold them into the batter.
- Transfer the batter to the prepared tin and bake for 30 - 35 minutes. Allow the brownies to cool completely before slicing into squares and enjoying!*





