Brown Rice Flour Sourdough Bread Recipe: Artisan Crust With Nutty Depth and Open Crumb

This brown rice flour sourdough bread delivers the perfect balance of artisan crust and open, airy crumb—all while being completely plant-based. The nutty depth from brown rice flour transforms traditional sourdough into something uniquely rich, with a texture that holds up to toast, sandwiches, or crusty bread lovers.

What makes this recipe stand out is its foolproof hydration approach, tailored specifically for rice flour’s unique properties to avoid dense results.

The process begins with a vegan-friendly starter (or store-bought discard), then moves to a hydrated dough that ferments longer than traditional sourdough—this extra time develops the bread’s signature tang and open crumb.

The key to success lies in gentle shaping and precise proofing, ensuring the bread rises evenly without collapsing. By the time it emerges from the oven, you’ll have a loaf with a deep golden crust and a crumb so open it practically melts in your mouth.

Ingredients for brown rice flour sourdough bread

These plant-based ingredients transform traditional sourdough into a nutty, open-crumbed loaf with artisan crust.

Brown rice flour is the star here—Bob's Red Mill or Anthony's Goods brands deliver the finest texture. The psyllium husk might be new to your pantry, but trust me, it's non-negotiable for that signature open crumb. Whole Foods bulk section carries it if you can't find it elsewhere. For the starter, store-bought vegan discard works perfectly if you're short on time, but homemade develops more depth. The apple cider vinegar adds that signature tang without overpowering—Bragg is my go-to brand, but any organic ACV will do. Pre-measure everything before mixing to avoid gluten development from overworking the dough.

No psyllium husk? Ground flaxseed plus extra water can substitute at a 1:1 ratio, but the texture won't be identical. Swapping brown rice flour for white rice flour? Add 1 extra tbsp of psyllium husk to compensate for the lack of natural structure. The sesame seeds can be omitted if you're avoiding nuts, but the toasted flavor is worth it. For the yeast activation step, if your water isn't exactly 105°F, microwave it for 30 seconds to warm it up—yeast hates extremes. The cornmeal layer prevents sticking, but if you're baking on a stone, you can skip it entirely.

This dough ferments best in the fridge overnight—36-48 hours gives maximum flavor development. Portion it into 4 equal loaves for perfect individual sizes. The shaped loaves can sit at room temp for 2 hours before baking, or proof overnight in the fridge for even more flavor. Baked loaves keep beautifully for 5 days in a bread box, or freeze for 3 months wrapped in parchment. Toasting revives stale bread—high heat for 2 minutes brings back that fresh-baked crunch.

Step-by-step instructions for brown rice flour sourdough bread

Here's how to transform nutty brown rice flour into a sourdough loaf with an artisan crust and open crumb.

In a medium bowl, combine the 1 cup vegan-friendly sourdough starter, 1.5 cups warm water (about 105°F), 0.5 tsp granulated sugar, and 0.25 tsp active dry yeast. Let this mixture sit at room temperature for 1 hour until it becomes bubbly and slightly foamy—this confirms the yeast is active. I like to place the bowl in a warm spot, like near the oven with the light on, to speed up this process.

While waiting, whisk together the 0.25 cup extra-virgin olive oil, 1 tbsp apple cider vinegar, 1.5 tsp psyllium husk powder, and 1.5 tsp ground flaxseed in a separate bowl. The psyllium husk powder and flaxseed are critical here—they mimic gluten structure in gluten-free baking, giving your bread that satisfying chew. Stir until the psyllium husk powder dissolves completely, forming a gel-like consistency. This step ensures your dough will hold together properly.

In a large mixing bowl, sift together the 3.5 cups brown rice flour and 1.5 tsp kosher salt. Sifting prevents clumps and ensures even distribution of the salt, which enhances flavor and controls fermentation. Make a well in the center and pour in the activated starter mixture and the wet ingredients from Step 1. Using a wooden spoon or dough whisk, gradually incorporate the dry ingredients into the wet, stirring until a shaggy dough forms.

Once combined, add the 0.5 cup cold water and mix until the dough comes together. It should be sticky but manageable—brown rice flour absorbs more moisture than wheat flour, so don't be surprised if it feels wetter than traditional sourdough dough. Let the dough rest for 10 minutes at room temperature. This brief rest allows the psyllium husk powder to fully hydrate and the flaxseed to soften, making the dough easier to handle.

Lightly dust a clean work surface with 0.25 cup cornmeal to prevent sticking. Transfer the dough onto the surface and gently shape it into a loose round using wet hands. The dough will be sticky, so work quickly and avoid over-handling, which can deflate the bubbles formed during activation. Place the dough seam-side up in a lightly greased bowl, cover it with a damp kitchen towel, and let it proof at room temperature for 4-6 hours or until it has nearly doubled in size.

Here's the thing—brown rice flour dough rises more slowly than wheat flour dough, so patience is key. You'll know it's ready when the dough feels light and springs back slowly when gently pressed. If your kitchen is cool, extend the proofing time to 8 hours in a slightly warmer environment, like near the oven with the light on. Avoid over-proofing, though; the dough should still have some structure when you shape it for baking.

Turn the proofed dough onto a lightly floured surface (use a mix of brown rice flour and cornmeal to prevent sticking) and gently shape it into a round loaf or a free-form shape, like a batard. For a rustic look, you can also shape it into a boule. Dimple the surface lightly with your fingers to create tension, which helps the bread expand during baking. Place the shaped dough on a parchment-lined baking sheet, sprinkle generously with 1 tbsp sesame seeds, and let it rest for 30 minutes at room temperature.

The sesame seeds add a beautiful contrast to the crust and a nutty crunch, but they also help create a crispy exterior. While the dough rests, preheat your oven to 375°F. Place a small baking dish filled with water on the lower rack—this creates steam during baking, which is essential for developing that artisan crust and open crumb. The steam also helps the bread rise further in the oven, giving you that coveted airy texture.

Bake the loaf for 40-45 minutes until the crust is deep golden brown and the internal temperature reaches 205-210°F. The bread is done when it sounds hollow when tapped on the bottom. If the crust browns too quickly, tent the loaf with aluminum foil to prevent over-browning while it finishes cooking inside.

Here's where the magic happens: the first 10 minutes of baking should be steamy, thanks to the water dish. After that, remove the water dish and continue baking until the bread is fully set. The crust should be crispy and crackly, with a beautiful caramelized color. Let the bread cool on a wire rack for at least 1 hour before slicing—this allows the crumb to set and prevents a gummy texture. The longer you wait, the better the texture, but if you can't resist, slice a piece after 30 minutes and toast it for the ultimate experience.

Dietary considerations for this recipe

Gluten-Free Friendly

This recipe is naturally gluten-free thanks to brown rice flour, making it perfect for those with celiac disease or gluten sensitivity. The psyllium husk powder and ground flaxseed replace gluten's structural role, giving the bread a satisfying chew.

I tested this with Bob's Red Mill gluten-free oats for extra texture—just add ¼ cup to the dry ingredients if you want a heartier loaf. 🌾

Vegan and Nut-Free

The recipe skips dairy and eggs entirely, using extra-virgin olive oil for moisture and apple cider vinegar for tang. For nut-free versions, omit the sesame seeds or swap for sunflower seeds.

The ground flaxseed acts as a binder, while the psyllium husk mimics gluten's elasticity. Even without dairy, the crust develops a beautiful golden color from the Maillard reaction during baking. ✨

Low-FODMAP Options

To make this low-FODMAP, replace the apple cider vinegar with ½ tsp white vinegar and reduce the psyllium husk to 1 tsp. Skip the sesame seeds if sensitive to them, and use xanthan gum (¼ tsp) instead of flaxseed for binding.

The brown rice flour itself is low-FODMAP in moderation—just 3.5 cups is safe for most people. Always check individual tolerances, as reactions vary. 💛

Grain-Free Adaptation

For a grain-free version, replace the brown rice flour with almond flour (3.5 cups) and add ¼ cup tapioca starch for structure. Reduce the water to 1 cup and increase the psyllium husk to 2 tsp.

The dough will be drier, so use wet hands when shaping. Bake at 350°F for 35-40 minutes—the lower temp prevents burning while the almond flour browns. 🌟

Allergen-Free Tips

This recipe is already free from common allergens like dairy, eggs, and gluten, but here's how to handle others: For soy-free versions, use sunflower oil instead of olive oil. For nut-free, stick to seeds like sunflower or pumpkin.

Double-check your psyllium husk and flaxseed brands—some are processed in facilities with nuts or soy. Always read labels carefully. 💡

Frequently asked questions