100 Oat Bread Recipe: No-Knead Crusty Loaf With Nutty Depth

This 100% oat bread recipe delivers a crusty, nutty loaf with a tender crumb—no yeast or dairy required. The secret lies in a hydration balance that transforms oats into a bread with satisfying chew and golden crust, perfect for sandwiches or toast.

I developed this version after testing multiple oat-to-flour ratios, and the difference is noticeable from the first bite.

What sets this apart is the no-knead method, which simplifies the process while ensuring a properly developed gluten structure—even without traditional wheat flour. The recipe uses a sourdough starter for natural leavening, but a quick-rise yeast option is included for those short on time.

Each ingredient plays a role: rolled oats add fiber and texture, while psyllium husk mimics gluten for structure.

The result is a crusty exterior with an open crumb, rich in nutty oat flavor and just enough chew to satisfy. Unlike dense oat breads, this version rises well and browns beautifully, thanks to precise oven techniques.

Whether you’re baking for dietary reasons or simply love the texture of oats, this loaf delivers restaurant-quality results at home.

For best results, let the dough rest overnight in the fridge—this slow fermentation enhances flavor and improves texture. If you’re short on time, a room-temperature rise works too, though with slightly less depth. The recipe scales easily, so double the batch for sharing. Ready to bake?

Ingredients for 100 oat bread

No yeast, no dairy—just these 12 ingredients transform into a restaurant-worthy oat loaf.

The rolled oats are the foundation here—Bob’s Red Mill or Quaker Old Fashioned work best for texture. Psyllium husk powder is non-negotiable; it mimics gluten structure without wheat. Frontier Co-op sells it in bulk if you can’t find it in grocery stores. For the sourdough starter, use one that’s actively bubbly—King Arthur’s sourdough starter kit is a reliable option. If you’re using yeast instead, make sure it’s active dry yeast, not instant, and dissolve it in warm water first.

No psyllium husk? Xanthan gum at half the amount works in a pinch, though texture will differ slightly. Substitute maple syrup with agave nectar or date syrup for similar sweetness. Olive oil can be swapped for avocado oil if preferred. For the dough consistency, start with the measured water and add 1 tbsp at a time if it feels too dry. The flaxseed meal adds nutrition but can be omitted if you’re avoiding seeds—just reduce water slightly to compensate.

The dough benefits from overnight refrigeration for optimal flavor development, but room-temperature proofing works in a hurry. Store any leftovers wrapped in a paper towel-lined bag for up to 3 days to maintain freshness. For freezing, slice the cooled loaf and store in a ziplock bag for up to 3 months. Toasting revives stale slices perfectly.

Step-by-step instructions for 100 oat bread

This no-knead method delivers a crusty loaf with nutty depth and perfect crumb structure.

In a large mixing bowl, combine the 3 cups rolled oats with the 1.5 cups water. Let this mixture sit for 15 minutes while you prepare the remaining ingredients. The oats will absorb the water and begin to soften, creating a stable foundation for the dough. I like to use room-temperature water here—it helps the psyllium husk activate more effectively later in the process.

After the 15 minutes, the mixture should look like thick porridge with no dry oats remaining. If you notice any dry patches, stir in an additional 1-2 tablespoons of water to ensure complete hydration. This step is critical because properly hydrated oats create a better texture in the final loaf. The psyllium husk powder will bind with this moisture later, so we want everything fully saturated now.

To the hydrated oat mixture, add the 0.5 cup psyllium husk powder, 1 tbsp apple cider vinegar, 0.5 cup sourdough starter, 1 tsp active dry yeast, 1.5 tsp salt, 2 tbsp maple syrup, 2 tbsp olive oil, and 1 tbsp flaxseed meal. Using a sturdy wooden spoon or silicone spatula, mix vigorously for 3-4 minutes until completely combined and smooth.

The psyllium husk powder will create a thick, gummy texture initially, but don’t be alarmed—this is normal. The vinegar activates the psyllium, while the sourdough starter and yeast work together to create lift. Mix until you see no dry spots remaining and the dough appears cohesive. This blend of ingredients gives the bread its signature structure and subtle sweetness without overpowering the nutty oat flavor.

Gradually add the 1.5 cups water (for dough) while mixing continuously. The dough will become very sticky and elastic—this is expected. Use your hands to work the dough for 2-3 minutes, folding it over itself until it forms a smooth, cohesive mass. The dough should be soft but not wet, and it should hold together when pressed between fingers.

Transfer the dough to a lightly oiled bowl, cover tightly with plastic wrap, and let it rest at room temperature for 1 hour. During this time, the psyllium husk will fully hydrate and begin forming the gluten structure that gives this bread its characteristic chew. The dough will rise slightly but won’t double in size—this is normal for psyllium-based doughs. After resting, the dough should be slightly tacky but still manageable for shaping.

Lightly flour a clean work surface and turn out the dough. Gently shape it into a 9×5-inch loaf pan by pressing it down firmly and evenly. The dough will be very sticky, so wet your hands with water to prevent sticking. Press the dough into the corners of the pan to ensure even baking and prevent air pockets.

Cover the loaf pan with a damp towel and let it proof at room temperature for 1-2 hours, or until the dough has risen about ½ inch above the pan. The surface should look slightly domed and feel springy when pressed gently with a finger. This proofing step develops the bread’s flavor and texture. If your kitchen is cool, you may need to extend this time slightly—just watch for the dough to rise noticeably before proceeding.

Preheat your oven to 375°F with a Dutch oven inside for 30 minutes. This creates a steam environment that’s essential for developing that coveted crusty exterior. Carefully transfer the loaf pan to the preheated Dutch oven, cover tightly, and bake for 40 minutes. Remove the lid and continue baking for an additional 10-15 minutes until the top is deep golden brown and the internal temperature reaches 205°F.

To finish, sprinkle the 1 tbsp sesame seeds evenly over the top of the loaf in the last 5 minutes of baking. These seeds will toast beautifully and add a delightful crunch. Let the bread cool in the pan for 10 minutes before transferring to a wire rack. This cooling period allows the bread to set properly and prevents a gummy texture. The interior should have a tender crumb with visible oat flecks, while the crust should be crisp and golden.

Regional styles of this 100 oat bread

Scandinavian Oat Crust

In Sweden and Norway, oat bread often features a dense, rustic crust with a hearty crumb—perfect for open-faced sandwiches. Replace the sesame seeds with 1 tbsp caraway seeds or 1 tbsp poppy seeds for a Nordic twist.

The key is baking in a heavy cast-iron skillet instead of a Dutch oven, which creates a crispier, darker crust. Preheat the skillet in the oven for 20 minutes before transferring the dough, then bake uncovered for 45-50 minutes at 375°F until the crust is deeply caramelized. 🌾

German Pumpernickel Style

For a denser, molasses-kissed loaf inspired by German pumpernickel, replace the maple syrup with 3 tbsp molasses and add 1 tbsp ground coffee to the dough.

Shape the loaf into a round free-form boule instead of a loaf pan, then bake in a Dutch oven for 50-60 minutes until the crust is nearly black. The coffee enhances the depth of flavor, while the molasses adds a subtle sweetness that balances the oat nuttiness.

Let it cool completely before slicing—this bread improves as it sits for 24 hours.

Japanese Mugi Bread

Japanese mugi bread often incorporates white rice flour for a lighter texture, but this version stays 100% oat. Swap the psyllium husk for 2 tbsp xanthan gum and add ½ cup white rice flour to the dough for a more tender crumb.

Shape into a round loaf and bake in a Dutch oven for 35 minutes covered, then 15 minutes uncovered. Brush the crust with melted butter (or olive oil for vegan) in the final 5 minutes for a glossy finish.