Almond Flour and Oxalates: Why It’s a Problem, and What to Bake With Instead

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The flour the wellness world built, and why it might be making you feel worse

Walk into any health-conscious kitchen in the last decade and you’ll find the same bag in the pantry: almond flour. It’s the darling of the gluten-free, grain-free, paleo, and keto worlds, promoted as the clean, nutritious, blood-sugar-friendly alternative to white flour for everything from pancakes to pizza crust to cookies.

For a lot of people, swapping white flour for almond flour was supposed to be the move that finally made baking “healthy.” The brownies became “approved.” The breakfast muffins became “guilt-free.” The Sunday pancakes became something you could eat without compromising your diet.

And then, somewhere along the way, you started feeling worse.

More joint pain. More brain fog. More fatigue. Maybe a kidney stone you couldn’t explain. Maybe a return of symptoms you thought you’d left behind years ago.

If that arc sounds familiar, almond flour may be a meaningful piece of the puzzle. This post walks through exactly why almond flour is a problem for people with oxalate sensitivity, what the numbers actually look like, and, most importantly, what to bake with instead so you don’t have to give up the foods you love.

(If you’re rebuilding your kitchen and want a printable list of low oxalate swaps you can take to the grocery store, the 7-Day Beginner’s Guide gives you the full plan.)

A quick note from me, before we go further

Baking has been one of my favorite things in the world since I was a little girl. I worked at a bakery as a teenager, and I’ve spent the last ten years developing recipes, testing, retesting, throwing batches out, starting over, dialing things in until they’re right.

I tell you that because I want you to trust what comes next. The reason I write about almond flour with so much specificity isn’t because I read a study about it once. It’s because I’ve spent a long time in flour. I know what works in a pancake and what doesn’t. I know which flours fall apart in a muffin and which ones hold their crumb. I know how a recipe behaves when you swap one flour for another and what you have to add back to make it work.

When I started learning about oxalates and realized almond flour had to come out of my own kitchen, I didn’t accept that low oxalate baking had to be sad, dense, or compromised. I went to work in the kitchen, the way I always have, and figured out what actually bakes well at this oxalate level, and what’s just internet advice that nobody’s tested.

Everything in this post is what’s actually working in my kitchen. The recipes I link to are recipes I’ve baked dozens of times. If a recipe of mine is on this site, it has earned its place there.

So, let’s get into it.

The number that surprises everyone

Almonds, the whole nuts almond flour is made from, contain approximately 122 milligrams of oxalate per ounce¹.

To put that in perspective: the low oxalate approach works from a tier-based framework, Low, Medium, and High, and works toward keeping the daily diet predominantly in the Low tier.

A single ounce of almonds, that’s roughly 23 nuts, or a small handful, already pushes far into High tier territory on its own.

Now think about almond flour. A single cup of almond flour contains around 90 grams of finely ground almonds, the equivalent of roughly 3 to 4 ounces of whole almonds. That puts the oxalate content of one cup of almond flour somewhere in the 400 to 500 milligram range.

That’s the flour you’ve been making muffins out of. That’s the base of your “healthy” pancakes. That’s what your favorite paleo cookies are built on. A single batch of almond flour cookies can contain more oxalate than the average American eats in two days.

For someone who has built their baking identity around almond flour, daily breakfast muffins, weekly cookies, pizza crust on Friday nights, almond flour alone can push their oxalate intake into territory that genuinely hurts to look at.

The unsettling truth: almond flour is not a “healthy” flour. It’s a high-oxalate flour that has been marketed as healthy because it’s gluten-free and grain-free, while sidestepping the question of whether the substitution is actually better for the people eating it.

Why almond flour is uniquely problematic

Whole almonds eaten as a snack are bad enough for someone with oxalate sensitivity, a small handful as part of a larger meal can already push someone well into High tier territory.

Almond flour is worse, for a few specific reasons:

1. Concentration. A handful of whole almonds is roughly 1 ounce. A serving of almond flour baked into a muffin or a slice of bread is often equivalent to several ounces of nuts in a single serving. The amount you can comfortably eat as flour-based baked goods is dramatically higher than the amount you’d ever eat as whole nuts.

2. Consumption pattern. Whole almonds are typically eaten as a snack, occasional, modest, and mixed in with other foods. Almond flour is typically eaten as a daily staple, breakfast muffins every morning, cookies multiple times a week, the base of weekly meal prep. The volume adds up fast.

3. No countervailing calcium. Whole almonds eaten with cheese or yogurt benefit from calcium binding the oxalate in the gut and reducing absorption². Almond flour baked into goods that don’t contain dairy (most paleo, vegan, and keto recipes) doesn’t get that buffer.

4. The “health halo” effect. Because almond flour has been marketed as healthy, people tend to eat it more freely than they would eat dessert made with regular flour. The “it’s almond flour” mental green light leads to portions and frequencies that wouldn’t apply to traditional baking.

The combined effect: a daily almond flour habit can easily contribute several hundred milligrams of oxalate per day, on top of whatever else is in the diet. For someone working toward a low oxalate eating pattern, that single habit alone can be the entire difference between feeling well and feeling terrible.

What about almond butter, almond milk, and whole almonds?

If almond flour is on the list of things to remove, the other almond products in your kitchen probably are too. The picture isn’t identical for each, but it’s directionally similar.

Almond butter: Concentrated like almond flour, but typically eaten in smaller volumes. A tablespoon of almond butter on toast is meaningfully high in oxalate. A daily almond-butter-on-everything habit is a real source.

Almond milk: Lower per serving than almond flour, but consumed in much larger volumes. A daily latte made with almond milk, or a daily glass of almond milk on cereal, can quietly contribute a meaningful chunk of oxalate over time.

Whole almonds: Around 122 mg per ounce. Occasional small handfuls can fit into a low oxalate diet for less sensitive individuals, but daily snacking is not workable.

Marzipan, almond paste, almond extract: Marzipan and almond paste are essentially almonds with sugar, high oxalate. Almond extract is used in such small quantities it’s typically a non-issue.

For someone serious about a low oxalate diet, the practical answer is to remove almonds in all their forms during the reduction phase, then potentially reintroduce small amounts of whole almonds later if your individual tolerance allows.

The Almond Flour Substitution Guide

Now for the part that actually matters: what do you bake with instead?

The good news is that there are several excellent low oxalate flours, each with their own strengths. Most baking recipes that call for almond flour can be successfully adapted with one of the alternatives below, sometimes with minor tweaks, sometimes as a direct swap.

This is the section where my baking experience earns its keep. There’s a lot of bad information online about what flours can replace almond flour. A lot of it comes from people who have written one recipe, gotten lucky, and called it a rule. Here’s what actually works.

Coconut Flour

The most popular almond flour alternative in the low oxalate community, and for good reason: it’s low oxalate, gluten-free, grain-free, and widely available.

The catch: coconut flour absorbs significantly more liquid than almond flour. You cannot do a 1:1 swap. The general rule is to use about 1/4 cup of coconut flour for every 1 cup of almond flour, and to add an extra egg or extra liquid for every 1/4 cup of coconut flour you use.

What it bakes well: muffins, pancakes, cookies, quick breads, dense cakes. Coconut flour produces a tender, slightly sweet result with a subtle coconut flavor. Try my Gluten-Free Blueberry Muffins or Gluten-Free Nut-Free Coffee Cake to see it in action.

What it doesn’t do well: anything that needs to hold a delicate structure or chew. Don’t try to make pizza dough or sandwich bread out of pure coconut flour.

Baking temperature: Coconut flour can start to burn around 350°F, so I always bake with it at 335°F. It’s a small adjustment that makes a real difference in texture and color.

White Rice Flour

A reliable, underrated alternative that deserves more attention. It’s low oxalate, neutral in flavor, and produces a clean texture.

The catch: rice flour can be slightly grainy on its own and doesn’t have the binding properties of almond flour or wheat. It performs best blended with another flour or with a binder like an extra egg or a small amount of starch.

What it bakes well: quick breads, pancakes, cookies, light cakes, and savory bakes. It’s also the base of many gluten-free flour blends.

What it doesn’t do well: anything that needs a chewy structure on its own.

Oat Flour

A reliable, gentle alternative that performs especially well in tender baked goods. Oat flour produces a soft, slightly sweet result with a mild flavor that works in almost any recipe almond flour was filling.

The catch: oat flour absorbs more liquid than rice flour but less than coconut flour. It also doesn’t have gluten, so baked goods can be slightly more crumbly without a binder. Adding an extra egg or a small amount of starch helps with structure.

What it bakes well: muffins, cookies, pancakes, quick breads, soft cakes. It’s particularly good in recipes where you want a tender crumb.

What it doesn’t do well: anything that needs a strong chew or rise on its own.

A quick note: if you’re sensitive to gluten cross-contamination, look specifically for “certified gluten-free” oat flour. Standard oat flour is naturally gluten-free but is often processed in facilities that handle wheat.

(Working through your pantry and want all of this organized into a printable swap list? Both the 7-Day Starter Guide and the Quick Reference Chart are below.)

What’s actually working in my kitchen right now

I want to give you two specific recipes that prove this can be done well, because at some point reading about flour gets abstract, and the whole reason you’re here is because you want to actually eat baked goods that taste like baked goods.

My Blueberry Muffins. These are honestly some of the best muffins I’ve ever baked, low oxalate or otherwise. They’re tender, properly domed on top, dotted with fresh blueberries, and they taste like a real muffin, not a “compliant” muffin, not a sad gluten-free muffin, just a muffin. I worked on this recipe for a long time before I was ready to share it. If you’re missing your old almond-flour breakfast muffins, start here. You won’t miss them anymore.

My Coffee Cake. This one I’m especially proud of. Coffee cake is a recipe that can fall apart in a hundred ways, too dry, too dense, no real cinnamon presence, a streusel that won’t hold, a crumb that crumbles in the wrong way. Mine doesn’t. It’s tender, layered, the streusel is exactly right, and you can serve it to people who have no idea what oxalates are and they’ll just ask for the recipe. That’s the bar.

Both recipes use the substitution principles in the section above, coconut flour, oat flour, the right ratios, the binders that actually work. They are tested. They are repeatable. And they are proof that you don’t have to lower your standards just because you’re lowering your oxalate intake.

What to Do This Week If You’re Quitting Almond Flour

If you’ve decided almond flour is coming out of your kitchen, here’s the simplest version of how to do it without making yourself miserable:

1. Don’t throw out the bag. You can give unopened bags to a friend who isn’t sensitive to oxalates, or compost any opened ones. Just don’t keep using it because you “paid for it”, that’s how habits sneak back in.

2. Identify your top three almond-flour recipes. The pancakes, the muffins, the cookies, whatever your daily or weekly almond-flour routine has been. These are the recipes you need to convert first.

3. Pick one substitute flour to start with. Don’t try to learn three new flours at once. Pick coconut flour or oat flour (the two most flexible for most almond flour recipes), buy one bag, and adapt your top three recipes to it before adding more.

4. Lower the bar for the first few attempts. The first batch of coconut flour pancakes will probably be slightly off. The second will be better. The third will be excellent. Bakery-grade results aren’t the goal in week one, usable results are.

5. Pair with calcium. During the transition, especially if you’ve been a heavy almond flour user, eat the calcium-containing meals around your baked goods. A piece of cheese with the muffin, a glass of milk with the cookie. The calcium helps bind any residual oxalate in your system and supports the broader strategy of the diet.

6. Borrow before you build. If recipe development isn’t your hobby, you don’t have to start from scratch. Use my Blueberry Muffins when you want a reliable everyday breakfast muffin. Use my Coffee Cake when you want a weekend treat or something to bring to brunch. Get a few wins under your belt with recipes that are already dialed in, and your kitchen confidence comes back fast.

If you’ve been a daily almond-flour person for years, the body needs time to clear what’s been accumulating. You may experience some [oxalate dumping] in the weeks after switching, pain flares, brief return of symptoms, mood shifts. This isn’t the diet failing you. It’s your body finally processing what’s been stored. Slow down, hydrate, and let it ride.

The Bigger Reframe

The reason almond flour ended up so heavily in the “healthy baking” category isn’t because it was scientifically better than the alternatives. It’s because it filled a market need, gluten-free, low-carb, paleo-compatible, at a moment when those frameworks were exploding. The marketing came first; the nutritional questioning came later.

Oxalates were not on the radar when almond flour became a wellness staple. They are now. And as more people discover that the foods they trusted to make them healthier were actually making them feel worse, the conversation around almond flour is shifting, quietly, but meaningfully.

You haven’t been duped. You haven’t failed. You’ve just been working with information that was missing a key piece. Now that you have the piece, you can adjust.

The pancakes can still be excellent. The muffins can still be tender. The cookies can still be perfect. They just won’t have almonds in them.

That’s a promise from a baker who’s spent a long time figuring out exactly what makes a baked good worth eating.

If you want a complete printable food swap chart that takes everything in this post and the rest of our high oxalate / low oxalate guides and turns it into something you can hand to your future self at the grocery store, the Quick Reference Chart below is exactly that.

Frequently Asked Questions About Almond Flour and Oxalates

Is almond flour high in oxalate?

Yes. Almond flour is one of the highest-oxalate flours you can bake with, roughly 400 to 500 mg of oxalate per cup, because it’s made from finely ground whole almonds (about 122 mg per ounce). For comparison, many people following a low oxalate diet aim to stay well under 50 mg of oxalate per day.

What can I bake with instead of almond flour?

The best low-oxalate swaps are coconut flour, white rice flour, and oat flour. Coconut flour is the most popular but soaks up a lot of liquid; white rice flour is neutral and reliable; oat flour is gentle and shines in tender bakes. None of them swap in 1:1, so use recipes written for that specific flour.

Is almond flour worse than eating whole almonds?

For most people, yes. Almond flour concentrates many almonds into a single serving, it’s usually eaten daily rather than occasionally, and it’s often baked without the dairy or calcium that would otherwise bind some of the oxalate in the gut.

Can I ever use almond flour again on a low oxalate diet?

Occasionally and in small amounts, many people can, especially once symptoms are stable and it’s paired with a calcium source. The real problem is daily, high-volume use, not a rare treat.

Does soaking or blanching almond flour remove the oxalates?

Not meaningfully. Soaking and blanching do little to the oxalate already concentrated in almond flour, so the reliable fix is simply to bake with lower-oxalate flours instead.

Read These Next

• The High Oxalate Foods List, Almonds are just the beginning, here is the full reference for what is high and what is surprisingly high.
• Low Oxalate Breakfast Ideas: 15+ Ways to Start the Day, Almond-flour-free ways to start the day, including baking alternatives that actually hold together.
• How to Start a Low Oxalate Diet (Without Overwhelming Yourself), The broader framework for making these swaps one at a time without giving up food you enjoy.

Sources

1. Chai W, Liebman M. Oxalate content of legumes, nuts, and grain-based flours. Journal of Food Composition and Analysis. 2005;18:723 to 729. sciencedirect.com
2. Hess B, et al. Calcium taken with meals binds oxalate in the gut and lowers its absorption. Nephrology Dialysis Transplantation. 1998. pubmed.ncbi.nlm.nih.gov
3. University of Chicago Kidney Stone Program. How to Eat a Low Oxalate Diet. kidneystones.uchicago.edu

The information on this site is for educational purposes only and is not intended as medical advice. Oxalate sensitivity and related conditions vary significantly between individuals. Always consult your healthcare provider before making significant dietary changes or starting any supplementation, especially if you have kidney disease, a history of kidney stones, or any other diagnosed health condition. Read our full medical disclaimer for more information.