Artisan Sourdough Bread Recipe King Arthur: Fermented Crust With Golden Crunch

This artisan sourdough bread recipe using King Arthur’s high-protein flour delivers that perfect golden crunch and airy crumb that makes every slice worth the wait. The Dutch oven method ensures a bakery-style crust, while the process—rooted in methodical technique—builds the tangy depth and crispy edges that define great sourdough.

We’ll start with a simple active dry yeast starter (no wild fermentation required), then move to bulk fermentation where the dough develops its signature tang. Hydration levels and precise kneading techniques are key to achieving that light, open crumb without overworking the gluten.

The final proof and scoring stages are where the magic happens—timing and confidence make all the difference.

By the time it emerges from the oven, you’ll have a loaf with a shatteringly crisp crust, a tender crumb, and that unmistakable sourdough aroma. The recipe includes troubleshooting tips to avoid common pitfalls like dense crumb or overproofing, ensuring success even for beginners.

This is the kind of bread that elevates any meal—restaurant-quality at home.

Perfect for breakfast toast, sandwiches, or simply enjoying with butter and jam. The process is worth the time, and the results speak for themselves. Let’s get started on crafting your perfect loaf.

Ingredients for artisan sourdough bread recipe king arthur

King Arthur flour and active starter unlock that bakery-style crunch and airy crumb—just 10 ingredients for restaurant-quality sourdough.

The King Arthur high-protein flour is non-negotiable here—its 12% protein content gives that signature open crumb. Grab the 5-pound bag from their website or local store; it keeps for 6 months in an airtight container. For the starter, King Arthur's sourdough starter kit makes life easier, but any active starter (store-bought or homemade) works. The yeast? Fresh is better—check the expiration date, and toss it if it smells off. The butter should be cold enough to hold its shape but soft enough to mix easily—take it out 10 minutes before using.

No honey? Maple syrup works 1:1. The starter can be refrigerated overnight if you're prepping ahead—just bring it to room temp and feed it 2 hours before mixing. For the scoring, a lame is ideal, but a sharp razor blade or even a serrated knife works in a pinch. The cornmeal? Bob's Red Mill is my go-to—it's fine enough to dust properly without clumping. If you're short on time, skip the ice bath and chill the dough in the fridge for 2 hours instead, though the ice gives better control over the final proof.

This dough is a 24-hour project, but it reheats beautifully—wrap cooled loaves in a clean kitchen towel and freeze for up to 3 months. For scoring, practice makes perfect: a single deep cut prevents blowing out, while multiple shallow cuts create steam vents. The egg wash? Brush lightly—too much makes the crust gummy. Store wrapped at room temp for 3 days or freeze for 3 months—it only gets better with time.

Step-by-step instructions for artisan sourdough bread with King Arthur flour

Here's how to craft a rustic loaf with an open crumb and crackling crust—every detail matters.

In a large mixing bowl, combine the 1 cup sourdough starter, 3.25 cups warm water (about 105°F), and 1 tablespoon honey or maple syrup. Let this sit for 10-15 minutes until you see bubbles forming at the surface—this confirms your starter is active and ready to work. Meanwhile, whisk together the 5 cups King Arthur high-protein flour and 1.5 teaspoons kosher salt in a separate bowl.

Once the starter is bubbly, add it to the flour mixture along with the 0.25 ounces active dry yeast. Mix gently with a wooden spoon until just combined—you want to avoid developing too much gluten at this stage. The dough will be shaggy and sticky, and that’s exactly how it should look. Cover the bowl loosely with a damp towel and let it rest for 30 minutes while you prepare the next steps.

After the initial rest, add the 0.5 cup cold, cubed unsalted butter to the dough. Using your hands or a dough scraper, work the butter into the dough until it’s fully incorporated. The butter should be cold enough to remain in chunks—this helps create pockets of fat that will later contribute to the bread’s tender crumb. The dough will feel even stickier now, so don’t be tempted to add more flour.

Let the dough rest again for 30 minutes (this is called an autolyse). During this time, the flour will begin to hydrate fully, and the gluten will start to relax. This step ensures a more extensible dough later, making it easier to shape. After 30 minutes, the dough should feel slightly smoother and more cohesive, though it will still be sticky to the touch.

Transfer the dough to a lightly floured surface and perform your first set of stretching and folding. Wet your hands to prevent sticking, then grab one side of the dough, stretch it upward, and fold it over itself. Rotate the dough a quarter turn and repeat this motion 4-5 times, focusing on the outer edges. This builds structure and strengthens the gluten network. Transfer the dough back to the bowl, cover it, and let it rest for 30 minutes.

Repeat the stretching and folding process every 30 minutes for a total of 2-3 hours. You’ll know the dough is ready when it passes the "poke test"—gently press two fingers into the dough. If the indentation holds its shape and doesn’t spring back immediately, the dough has developed enough gluten and is ready for shaping. The dough should also look slightly puffy and feel noticeably more elastic.

Turn the dough onto a lightly floured surface and shape it into a tight round (boule) or an oval (batard), depending on your preference. To do this, dimple the surface of the dough with your fingers, then use your hands to gather the edges toward the center, sealing them tightly as you go. The goal is to create surface tension that will help the bread hold its shape during baking.

Place the shaped dough seam-side up in a bowl, cover it with the 1 cup ice cubes, and refrigerate for 12-18 hours. This cold proofing slows fermentation, allowing flavors to develop deeply while keeping the dough manageable. The ice cubes help maintain a consistent temperature and create a stable environment for the dough to rise slowly. After proofing, the dough should look noticeably puffier and feel springy when pressed gently.

Preheat your oven to 475°F with a Dutch oven inside for 45 minutes. Remove the Dutch oven from the oven and carefully transfer the dough onto a piece of parchment paper. Use a sharp lame or razor blade to score the dough in a decorative pattern—this helps control expansion and gives the bread its signature open crumb. Brush the top with the 1 whole egg wash (optional but recommended for a golden crust).

Carefully lift the dough (with the parchment) into the hot Dutch oven. Bake covered for 20 minutes, then remove the lid and bake uncovered for an additional 20-25 minutes, until the crust is deep golden brown and sounds hollow when tapped on the bottom. The internal temperature should reach 205-210°F. Let the bread cool on a wire rack for at least 1 hour before slicing—this ensures the crumb sets properly and prevents a gummy texture.

Creative variations of these flavors

Sweet & Savory Twists

Add 1 tbsp cinnamon and ½ cup raisins to the dough for a cinnamon-sourdough loaf—perfect for French toast or breakfast pastries. The sweetness balances the tang, creating a breakfast favorite. 🍯

For a savory option, swap the honey for 1 tbsp olive oil and add 2 tbsp whole-grain mustard to the dough. Top with 2 tbsp sesame seeds before baking for a nutty, tangy loaf that pairs beautifully with soups or charcuterie boards.

Herb & Seed Infusions

Boost flavor with 2 tbsp fresh rosemary or thyme mixed into the dough. The herbs infuse beautifully during fermentation, adding an aromatic depth. Finish with 1 tbsp poppy or sesame seeds before baking for extra texture.

For a seed-loaf variation, mix ¼ cup pumpkin seeds and ¼ cup sunflower seeds into the dough. These seeds add crunch and a nutty flavor that complements the sourdough tang perfectly.

Whole Grain Mix-Ins

Replace 1 cup of King Arthur flour with whole wheat flour or spelt flour for a nuttier, heartier loaf. The whole grains add fiber and a denser crumb, perfect for sandwiches or toast with avocado.

For a rustic rye twist, substitute 1 cup of flour with dark rye flour and add 1 tsp caraway seeds to the dough. This creates a deep, earthy flavor that’s ideal for open-faced sandwiches or paired with smoked fish.

Gluten-Free Adaptation

Use a 1:1 gluten-free flour blend (like King Arthur Measure for Measure) and reduce hydration by 10% to prevent stickiness. Add 1 tbsp psyllium husk powder to improve structure. Note: gluten-free sourdough requires longer fermentation—expect 4-6 hours of bulk fermentation.