Cassava flour is gluten-free — it’s the whole ground cassava root, not a grain, and Otto’s Naturals is single-ingredient.
Yes. Cassava flour is made from the whole cassava (yuca/manioc) root — peeled, dried, and ground. Cassava is a starchy root vegetable, not a grain at all, so it’s inherently gluten-free and grain-free, and a popular near 1:1 wheat-flour substitute in paleo baking. Otto’s Naturals (the benchmark brand) is single-ingredient cassava, described as gluten-free and grain-free; Anthony’s and Bob’s Red Mill offer labeled/dedicated-GF cassava flour. It is distinct from tapioca (the extracted starch). The only celiac concern is shared-facility cross-contact — choose a labeled GF product.
Cassava flour is gluten-free — and it goes one step further than most gluten-free flours: it’s also completely grain-free. It’s nothing but the whole cassava root (the same plant as yuca and manioc), peeled, dried, and milled. Because cassava is a root vegetable rather than a cereal, there’s no grain anywhere in it, which is exactly why it became a darling of paleo and grain-free baking.
The two things worth understanding are how it differs from tapioca (a common mix-up) and why a celiac should still look for a dedicated-gluten-free brand even though the flour itself is grain-free. This guide covers both and names the trusted brands.
Why Cassava Flour Is Gluten-Free
Cassava flour is made by peeling, drying, and grinding the whole cassava root. Per FDA labeling rules, the gluten-containing grains are wheat, barley, and rye — cassava is a root vegetable, not a grain, so it isn’t on that list and isn’t even in the grain family. Cassava flour is inherently gluten-free, and a labeled or dedicated-gluten-free product additionally meets the FDA under-20-ppm standard against shared-facility wheat cross-contact.
Brand confirmation makes the choice straightforward. Otto’s Naturals — the brand that essentially built the cassava-flour category in the U.S. — is single-ingredient cassava root and is described as gluten-free, grain-free, nut-free, and paleo, available in conventional, Certified Non-GMO, and Organic versions. Anthony’s cassava flour is labeled gluten-free and batch-tested, and Bob’s Red Mill cassava flour is part of its dedicated-gluten-free-facility line.
The most common confusion is cassava flour vs. tapioca. Both come from the cassava root and both are gluten-free, but tapioca is only the extracted starch, while cassava flour is the whole root. They have very different baking behavior and are not 1:1 substitutes for each other. The only celiac caveat is bulk-bin or imported cassava flour with no gluten-free labeling — fine by ingredient, but possibly processed on shared wheat equipment, so choose a labeled product.
Brand-by-Brand: Which Cassava Flour Is Gluten-Free?
All cassava flour is gluten-free and grain-free by ingredient; the strongest celiac choice is a single-ingredient, labeled / dedicated-GF brand.
| Brand / Product | What it is | Gluten-Free? |
|---|---|---|
| Otto’s Naturals Cassava Flour | Single-ingredient cassava root | ✓ Yes — GF & grain-free |
| Anthony’s Cassava Flour | Labeled GF, batch-tested | ✓ Yes |
| Bob’s Red Mill Cassava Flour | Dedicated GF facility line | ✓ Yes — labeled GF |
| Other single-ingredient labeled-GF cassava flour | Cassava root, labeled GF | ✓ Yes |
| Tapioca flour / starch (related, different) | Extracted cassava starch | ✓ GF, but NOT a 1:1 swap for cassava flour |
| Bulk-bin / imported cassava flour (uncertified) | Possibly shared wheat equipment | ~ GF by ingredient; confirm a GF label if celiac |
| A baked good with cassava flour + a non-GF add-in | Recipe-dependent | ~ Verify the other ingredients |
Cross-Contamination Risk
Manufacturing
Low
- Inherently gluten-free and grain-free (a root).
- Only shared-facility wheat processing is a concern.
- Otto’s/Anthony’s/Bob’s labeled-GF removes that risk.
Bakery / Kitchen
Medium
- The cassava flour itself is not a gluten grain.
- Airborne wheat flour in a shared kitchen is the contaminant.
- Use clean surfaces and tools.
Home
Low
- A labeled / dedicated-GF bag has no wheat, barley, or rye.
- Store away from wheat flour; use a clean scoop.
- Don’t swap it 1:1 with tapioca starch.
Cassava Flour — GF Status
- Otto’s Naturals Cassava Flour — gluten-free & grain-free (single-ingredient)
- Anthony’s Cassava Flour — gluten-free (labeled, batch-tested)
- Bob’s Red Mill Cassava Flour — gluten-free (dedicated-GF facility line)
- Tapioca flour/starch (related but different) — gluten-free; not a 1:1 swap
- Bulk-bin / imported cassava flour (uncertified) — GF by ingredient; confirm a GF label if celiac
- A baked good with cassava flour + a non-GF add-in — verify the other ingredients
What to Look For — Or Avoid
- Single ingredient: cassava (yuca/manioc) root
- “Gluten-free” label / dedicated-GF facility (Otto’s, Anthony’s, Bob’s)
- “Grain-free” and “paleo” statements for the plain product
- Uncertified bulk-bin/imported cassava flour (if celiac)
- Substituting cassava flour 1:1 with tapioca starch
- Non-GF add-ins in the recipe you make with it
Frequently Asked Questions
Cassava flour is gluten-free and grain-free by ingredient, so the questions are mostly about the tapioca mix-up and shared-facility cross-contact. Here are clear answers.
Is cassava flour gluten-free?
Yes. Cassava flour is the whole ground cassava root, a starchy vegetable, not a gluten-containing grain (in fact not a grain at all). It is inherently gluten-free; choose a labeled or dedicated-gluten-free product if you have celiac disease.
Is cassava flour grain-free?
Yes. Cassava is a root vegetable (yuca/manioc), so cassava flour is both gluten-free and grain-free, which is why it is popular in paleo and grain-free baking.
Is Otto’s Naturals cassava flour gluten-free?
Yes. Otto’s Naturals — the benchmark cassava-flour brand — is single-ingredient cassava root and is described as gluten-free, grain-free, nut-free, and paleo, available in conventional, Certified Non-GMO, and Organic versions.
Is cassava flour the same as tapioca flour?
No. Both come from the cassava root and both are gluten-free, but tapioca is the extracted starch while cassava flour is the whole root. They behave differently in recipes and are not 1:1 substitutes for each other.
Can I substitute cassava flour for wheat flour?
Yes, in many recipes it is one of the closest grain-free near-1:1 wheat-flour substitutes by texture. It introduces no gluten — just keep every other ingredient in the recipe gluten-free.
Why buy a dedicated-gluten-free cassava flour?
Cassava flour is inherently gluten-free, but processing in a facility that also handles wheat can introduce wheat gluten. A labeled or dedicated-gluten-free product (Otto’s Naturals, Anthony’s, Bob’s Red Mill) meets the FDA less-than-20-ppm standard, removing that risk.
Can people with celiac disease use cassava flour?
Yes. Cassava flour is naturally gluten-free and celiac-safe; choose a single-ingredient labeled / dedicated-gluten-free bag (Otto’s Naturals, Anthony’s, Bob’s Red Mill), store it away from wheat flour, and keep the rest of the recipe gluten-free.