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Sweet Potato Brownie, Vegan, Low Histamine

As I’m writing this I’m stuck in the house in Dallas due to the corona virus situation. I’ve been baking a lot these days and usually part of what I make, I freeze. This gives me the opportunity to use a lot of the ingredients I have around the house before our big move to Denmark, and at the same time we have a back-up just in case. These lectin-free sweet potato brownies are amazing because they only require a few ingredients, and it leaves room for flexibility in case you don’t have one of the ingredients.

I made this a few weeks ago and a follower on Instagram wrote the recipe down on a piece of paper and made it. I though I’d make her life easier by adding it on the website; it does deserve its place here since it’s so easy to make and so tasty. It has no eggs, good for y’all who can’t have eggs for a reason or another. I am on a low histamine diet but I do well with small amounts of good quality dark chocolate, so I use just a little bit on top. It does not have cacao powder at all, but if you feel like you can add one or two tablespoons for a more intense chocolate taste.

There are no sweeteners at all in this brownie. The sweet potato is sweet, and both the chestnut and tigernut flour are naturally sweet, as well as the coconut oil and the pecan butter. If you don’t have pecan butter, you can replace it with any nut butter, and the chestnut and tigernut flours are interchangable. Ideally use half-half but if you don’t have one of them just use the one you have. By mixing all the ingredients you will get a stiff, sticky batter (not dough) that will need to be spooned into the pan and leveled with a spoon or spatula. If for any reason the batter is too thin, just add more flour.

I buy my chestnut flour from in the US, as it’s hard to find in stores. Alternatively, you can also order on Amazon. I noticed is easier to find in Europe. Tigernut flour is easier to find, I know some Whole Foods, Sprouts and health stores have it and can also be ordered on Amazon. Hopefully you have some in your pantry. Alternatively, I haven’t tried but I think almond flour would work too, even cassava, but then it would get too carby, and cassava doesn’t have its own flavor, so maybe you would need to add some vanilla, sweetener, orange zest etc.. Chestnut and tigernut have amazing flavors though, it’s worth having them in your pantry for regular use.

This brownie is best served cold, from the fridge. I freeze them and take them out 30 minutes before I want to eat them.

*This post contains affiliated links, which means I get a small commission if you choose to purchase something via one of my links, at no extra cost to you.

Sweet Potato Brownie, Vegan, Low Histamine

1 Star2 Stars3 Stars4 Stars5 Stars (29 votes, average: 3.69 out of 5)
By Claudia Curici Serves: 16
Prep Time: 15 minutes Cooking Time: 25 minutes

An easy to make treat that is lectin-free, dairy-free, egg-free and if you are ok with a small amount of chocolate, also low histamine.


  • 1/2 cup chestnut flour
  • 1/2 cup tigernut flour
  • 1/2 teaspoon cream of tartar
  • 1/4 baking soda
  • 1 cup cooked, mashed potato
  • 1/4 cup coconut oil, melted but not hot
  • 1/4 cup pecan butter
  • 1/4 cup extra virgin olive oil
  • 1 teaspoon fresh chopped rosemary
  • pinch of all-spice
  • pinch of sea salt
  • a handful of chopped dark chocolate, for sprinkling on top



Preheat the oven to 350F. Prepare a baking dish (I used a 7sq inch one) by lining it with parchement paper.


In a bowl mix the flour, cream of tartar and baking soda.


In the food processor, mix the sweet potato, coconut oil, pecan butter, olive oil, rosemary, all-spice, sea salt.


Once the content of the food processor is creamy, add the dry mix and process until all mixed and becomes a sticky, stiff batter. Spoon all the batter in the baking dish and level. Sprinkle the chopped chocolate on top.


Bake for about 20-25 minutes, until the top is dark brown and the batter settles (no longer soft to touch).


Take out and let cool before cutting in small squares. Refrigerate before eating. Can also be frozen.

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