8 Hour Sourdough Sandwich Bread Recipe: Crusty Crunch With Pillowy Softness Inside

This 8-hour sourdough sandwich bread recipe delivers the perfect balance of crusty crunch and pillowy softness—ideal for sandwiches that hold up without getting soggy. The secret lies in a cold overnight fermentation, which develops deep flavor while keeping the crumb tender and the crust shatteringly crisp.

I've refined this method over years of baking, ensuring every slice is just right for your favorite deli creations.

Unlike rushed recipes, this bread benefits from time and patience—the dough rests overnight in the fridge, allowing gluten to relax and flavors to meld.

You'll work with a high-hydration dough (70% hydration) that yields an open crumb structure perfect for sandwiches, while a stretch-and-fold technique during bulk fermentation builds strength without overworking the dough. The result? A loaf with an airy, open crumb that stays fresh for days.

Baking this bread requires just one rise and one bake, making it simpler than it sounds. The cold proof in the morning ensures a controlled rise, while a sharp lame or razor creates clean, decorative scores that encourage oven spring.

Once baked, the crust develops a deep golden color with that coveted crisp texture, while the interior remains soft enough to hold fillings without tearing.

Perfect for homemade sandwiches, toast, or charcuterie boards, this recipe yields a loaf that's ready in 8 hours total—ideal for weekend baking. The dough can be shaped and refrigerated overnight, so you wake up to the aroma of fresh bread and a ready-to-bake loaf.

Let's get started on creating your perfect sandwich bread.

Ingredients for 8 hour sourdough sandwich bread

Perfectly balanced ingredients for sourdough sandwich bread with legendary texture.

The sourdough starter is non-negotiable here—it's the soul of this bread. King Arthur's sourdough starter or a well-maintained 100% hydration culture works best. Look for a starter that's just starting to bubble and has a tangy aroma. If your starter's sluggish, feed it 1:1:1 (starter:flour:water) 4-6 hours before using. The high-protein bread flour develops that signature open crumb, while the all-purpose flour adds tenderness. For the milk, whole milk adds richness—skip it for a lighter loaf, but I don't recommend it. The olive oil isn't just flavor; it's what gives this dough that signature stretch and chew.

No sourdough starter? 1 tsp instant yeast plus 1/2 tsp sugar can substitute, but the flavor won't be the same. Running short on bread flour? Add 1 extra tbsp vital wheat gluten to the all-purpose. The milk can be swapped for water plus 1 tbsp melted butter if you're avoiding dairy. For scoring, a razor blade creates the cleanest cuts, but a sharp lame or even a single-edge safety razor works beautifully. The ice water in the final shaping? Don't skip this—it tightens the gluten for that perfect oven spring. If you're making multiple loaves, use a digital scale for precision with the flour measurements.

This dough is a patient recipe—plan ahead. The shaped dough keeps beautifully in the fridge for up to 48 hours before baking, so shape it the night before and bake in the morning. Once baked, let the loaves cool completely on a wire rack before slicing—at least 2 hours. For maximum freshness, wrap cooled loaves in beeswax wrap or a cotton towel and store at room temperature for 3-4 days. The crust stays crisp for about 2 days, but the interior remains soft for 5-6 days. For longer storage, freeze slices wrapped in parchment—up to 3 months. The aroma when you pull it from the oven? Worth every minute of the 8-hour process.

Step-by-step instructions for artisan sourdough sandwich bread

This method delivers that perfect balance of crispy crust and soft interior—every slice will be a revelation.

In a large mixing bowl, combine the 0.5 cup Active Sourdough Starter, 4 cups All-Purpose Flour, 1 cup Bread Flour, 0.0625 cup Granulated Sugar, 0.5 tsp Instant Yeast, and 1.5 tsp Diamond Crystal Kosher Salt. I like to use a wooden spoon first to break up any flour clumps before switching to my stand mixer with the dough hook attachment.

Add the 0.5 cup Whole Milk and 0.25 cup Extra-Virgin Olive Oil to the dry ingredients. Mix on low speed for 2 minutes until the ingredients come together into a shaggy mass. This initial mixing stage is crucial—it allows the gluten to begin forming while keeping the dough from becoming too stiff too quickly.

Gradually add the 1.5 cups Water while mixing on low speed. Increase to medium speed and continue mixing for 5-7 minutes until the dough pulls away from the sides of the bowl and forms a smooth, elastic ball. You'll know it's ready when it passes the "windowpane test"—stretch a small piece of dough between your fingers and it should be thin enough to see light through without tearing.

Transfer the dough to a lightly oiled bowl, cover it with a damp kitchen towel, and let it rest at room temperature for 1 hour. This initial rest period allows the gluten to relax after the vigorous mixing. After the hour, perform a series of "stretch and folds" every 30 minutes for a total of 3 sets. Wet your hands and gently grab one side of the dough, stretch it upward, and fold it over itself. Rotate the bowl and repeat on all four sides.

After the final stretch and fold, cover the dough again and let it ferment at room temperature for 6 hours. You're aiming for about 75-80% of the dough's volume increase by the end of this period. The dough should look puffy, with bubbles forming on the surface and a slight jiggle when you shake the bowl. This long fermentation develops complex flavors and creates that signature open crumb structure we love in great sandwich bread.

Lightly flour your work surface and turn out the fermented dough. Gently deflate it by pressing down with your fists, then divide it into 4 equal pieces (about 8 ounces each). I like to use a bench scraper to help divide the dough cleanly. Shape each piece into a tight round boule by pulling the edges toward the center and tucking them under.

Place the shaped boules on a parchment-lined baking sheet, cover them with a damp towel, and refrigerate for 12-16 hours. This cold proofing step is what gives this bread its incredible texture—the slow fermentation allows the gluten to strengthen and the flavors to deepen. When you remove the dough from the fridge, it should have nearly doubled in size and feel springy when pressed gently with your finger.

Preheat your oven to 425°F with a Dutch oven inside for 45 minutes. Remove the Dutch oven and carefully transfer the cold dough (still on its parchment) into the hot pot. Using a sharp razor blade or lame, score each boule with a ½-inch deep cross on the top. This not only looks beautiful but also controls where the dough expands during baking.

Bake covered for 30 minutes, then remove the lid and bake for another 15-20 minutes until the crust is a deep golden brown and sounds hollow when tapped on the bottom. The internal temperature should reach 205-210°F when measured with an instant-read thermometer. This two-stage baking creates that perfect crust—crispy on the outside, soft and airy on the inside.

Remove the bread from the Dutch oven and let it cool on a wire rack for at least 2 hours before slicing. This cooling period is essential—it allows the steam inside to escape and the crumb to set properly. If you try to slice it too soon, you'll end up with gummy bread that falls apart.

Once cooled, slice the bread with a serrated knife for clean cuts. Each slice should reveal an open, irregular crumb with a crispy crust that gives way to a soft, pillowy interior. This is the perfect sandwich bread—it holds up to all your favorite fillings while delivering that authentic sourdough flavor in every bite. Store any leftovers wrapped in a bread bag at room temperature for up to 5 days, or freeze for longer storage.

Storing and reheating this dish

Room-Temp Revival

If your sourdough sandwich bread develops a stale crust after 2-3 days, revive it by placing the loaf in a 350°F oven for 5-10 minutes until the crust crisps back up. This works best with unwrapped bread—just remove it from storage and heat directly on a baking sheet.

For even better results, brush the crust with a little water or olive oil before reheating to restore that fresh-baked aroma. 🔥

Oven Refresh Method

For a more thorough refresh, slice the bread and arrange it on a baking sheet. Cover loosely with aluminum foil and heat at 300°F for 8-10 minutes. The foil traps moisture while the oven gently warms the interior.

I like adding a spritz of water before reheating to help restore moisture to the crumb. This method works especially well for sandwiches—just assemble your sandwich, wrap it in foil, and heat for 5 minutes at 350°F.

When you need quick results, the microwave can work—but use it carefully. Place a slice on a microwave-safe plate with a damp paper towel over it. Heat for 10-15 seconds on medium power. The damp towel prevents drying while adding back some moisture.

For sandwiches, assemble first, then microwave for 20-30 seconds covered with a damp towel. This keeps the fillings warm without making the bread soggy. ✨

Freezer Storage Tips

For maximum freshness, slice your bread and freeze individual slices wrapped in parchment paper between layers. I use quart-sized freezer bags with all air removed to prevent freezer burn.

When ready to use, thaw at room temperature for 30 minutes or reheat directly from frozen in a 350°F oven for 5-7 minutes. The crust stays crisp while the interior remains soft—perfect for quick sandwiches. ❄️

Long-Term Crust Preservation

To maintain that perfect crust for days, store your bread in a paper bag at room temperature. The paper allows the bread to breathe while preventing it from becoming gummy. For extra protection, place the bag inside a bread box or cotton towel-lined container.

This method keeps the crust crisp for 4-5 days while preserving the soft interior. If you notice the crust softening after 3 days, give it a quick 3-minute oven refresh at 375°F to restore its crunch.

Sandwich-Specific Tricks

For sandwiches, assemble your bread with fillings and wrap it tightly in parchment paper before reheating. Place the wrapped sandwich in a 350°F oven for 8-10 minutes—this prevents the bread from absorbing moisture from the fillings.

Alternatively, use the griddle method: heat a nonstick skillet over medium, place the assembled sandwich, and cover with a lid for 2-3 minutes until the bread is golden and crisp. This creates that perfect toasted texture without drying out the fillings. 💫

Frequently asked questions