The BEST Fudgy Flourless Sweet Potato Brownies

Published: Jan 9, 2022 · Modified: Mar 16, 2023 by Nicole Addison · This post may contain affiliate links · 32 Comments

Imagine the perfect brownie. Warm and fudgy with crispy corners and chunks of melted chocolate. THAT is what you get when you make these flourless sweet potato brownies.

I know sweet potato brownies have already had their shining star moment, but I am not kidding when I say these are THE BEST flourless sweet potato brownies. I am a big fan of sneaking extra fibre into recipes when I can (chickpea blondies, black bean brownies, chickpea cookie dough), so these brownies were inevitable.

They were a labour of love, I spent over 3 years (off and on) testing different variations of this recipe until I was completely happy with it and I can finally say these are perfect. They are everything you look for in a brownie, they have a moist (sorry) gooey center, a slightly crisp top, and they have the perfect amount of melted chocolate.

The true test of any of my recipes is always to get my brothers approval.

My brother is the type of person who if he knows a recipe has something "that shouldn't be in it" that's all he thinks about. So getting him to test some of my "healthier" recipes has been a challenge. What I've learned to do is give him something to try without telling him what's in it. Once he tells me he likes it THEN I will tell him the ingredients.

That's what I did with these brownies. I left them on the counter and told him I made brownies. An hour later he texted me and said he and his friends had eaten almost the entire tray. His friend actually said "these are the best brownies I've ever had." That was the moment I knew that I had a winner.

Ingredients

Sweet Potato- You can't have sweet potato brownies without sweet potato. This is the secret to getting the fudgiest, moist-est (not a word I know), brownies without adding a ton of oil. To make my sweet potato puree I use a fork to pierce holes in a orange sweet potato then microwave for 3 minutes on one side, flip and microwave on the other side for 3 minutes.

Oat Flour- For these flourless sweet potato brownies I used oat flour as a substitute for all purpose flour. I love using oat flour in my recipes for a little extra fibre and whole grains.

Cocoa Powder- For the rich chocolate flavour we all know and love in a good brownie.

Maple Syrup- Maple syrup adds some natural sweetness to these brownies.

Peanut Butter- For these brownies, I use natural peanut butter (look for one with 1 or 2 ingredients like this one ).

Instructions

In a large bowl combine sweet potato, vanilla, maple syrup, egg, peanut butter and coconut oil

In a separate bowl, combine dry ingredients. Once combined slowly add the dry ingredients to the wet ingredients, stirring well.

Once a batter has formed, add in the mix-ins you have chosen to add (chocolate, walnuts, marshmallows etc.)

Pour batter into a prepared 8x8 baking pan, bake for 22-28 minutes. Once brownies are done, remove from oven, allow to cool and drizzle with melted chocolate if desired.

Substitutions

To make these brownies....

Gluten free: Ensure your oats are certified gluten free (this will depend on where you are located in the world)!

Vegan: Substituting the egg with a flax egg will work just fine (the brownies may just be slightly on the fudgier side (but what's wrong with that?)!

To make a flax egg: combine 1 tablespoon ground flax seeds with 3 tablespoon warm water and set aside for 15 minutes, until a gel-like consistency forms

Nut free: Substituting the peanut butter with sunflower seed butter will work!

Sugar free: Skip the chocolate chips and use a sugar free maple syrup like this.

Missing an ingredient? Try these:

Oat flour: Can be subbed with all purpose flour (I have not tested almond flour but I believe it SHOULD work)
Coconut oil: Butter will work as a substitute
Maple syrup: Honey will work just fine!
Peanut butter: Any nut butter can work in these sweet potato brownies! Try almond butter or cashew butter!

Variations

The possibilities are endless with these sweet potato brownies! Add chocolate chips, marshmallows, skor pieces, walnuts, raspberries... the choice is yours!

Equipment

8x8 inch square baking pan
Mixing bowls
Food processor (to help puree sweet potato) you can also use a potato masher

Storage

Store these sweet potato brownies in an airtight container on the counter or in the fridge for up to 1 week.

Store them in the freezer in an airtight container for up to 3 months. To defrost- place a brownie on a plate in the microwave and microwave for about 15 seconds.

Top Tip

Make sure you are mashing the sweet potato until a puree forms to avoid having chunks of sweet potato in your brownies ( a food processor may help with this)!

Frequently Asked Questions

How are these sweet potato brownies flourless?

In this case flourless means they do not contain regular all purpose baking flour. This means that these are also gluten-free sweet potato brownies! Rather than using all purpose flour I chose to use oat flour, which you can either buy pre processed OR you can make yourself at home in 5 minutes.

How can you make your own oat flour?

All you need to do is blend an ⅔ + 2 tablespoon oats in a high-powered blender or food processor until the oats have reached a smooth flour-like consistency.

Why did you use oat flour?

I love using oat flour as an easy way to add more fibre to recipes to help keep you fuller for a longer period of time as well as reducing blood sugar spikes. It's also great because if you use gluten-free oats these brownies are also gluten free!

More Favourite Dessert Recipes

I love seeing you make my recipes! If you make these flourless sweet potato brownies sure to tag me on Instagram @nourishedbynic or leave a comment here letting me know how it was 🙂

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