Two Loaf Sourdough Sandwich Bread Recipe: Crusty Exteriors and Airy, Chewy Centers

This two loaf sourdough sandwich bread recipe delivers the perfect balance of crusty exteriors and airy, chewy centers—ideal for sandwiches, toast, or charcuterie boards. 💛 The secret lies in precise hydration and controlled fermentation, transforming simple ingredients into artisanal-quality bread that rivals bakery favorites. I’ve refined this recipe over years to ensure reliable results every time, whether you’re a beginner or seasoned baker.

With a 75% hydration ratio and extended proofing, this dough develops exceptional flavor and texture. The recipe makes two 1-pound loaves, perfect for feeding a family or prepping for the week. You’ll need an active sourdough starter (fed and bubbly) and patience for the 24-hour process, but the reward is bread that stays fresh for days and improves with storage.

What sets this recipe apart is the crispy, caramelized crust achieved through steam baking, while the interior remains tender and open-crumb. The dough’s structure makes it ideal for slicing—no gummy texture here. Whether you’re making grilled cheese, French toast, or simply enjoying it with butter, this bread delivers restaurant-quality results at home.

Ready to bake? This method includes optional additions like seeds or herbs, but the core recipe focuses on mastering the fundamentals. Let’s get started with the foolproof steps that will give you bakery-worthy sourdough every time.

Ingredients for 2 loaf sourdough sandwich bread

Artisanal-quality sourdough starts with precise ingredients and technique for perfect crust and crumb.

The flours are the foundation—bread flour for structure and whole wheat for flavor. King Arthur or Caputo are ideal for bread flour, while any organic whole wheat works. Butter adds richness, so full-fat, unsalted is non-negotiable. The starter must be active with bubbles—if it’s flat, feed it 12 hours before baking. For the water, filtered is best to avoid off-flavors, but tap water works if you’re in a soft water area. Diamond Crystal salt dissolves more slowly, so use it if you have it—it enhances flavor development during fermentation.

No bread flour? All-purpose plus 1 tsp vital wheat gluten per cup mimics the protein structure. Whole wheat can be swapped for rye flour at half the amount for a tangier loaf. Butter out of budget? Vegetable oil at half the quantity works, though texture will differ slightly. The sesame seeds are optional but add a beautiful crunch—toasted for 2 minutes before sprinkling intensifies flavor. For the steam source, a metal tray with boiling water works if you don’t have parchment. Just place it in the oven during the first 15 minutes of baking to create that signature crust.

The dough keeps for 3 days in the fridge, covered tightly. For longer storage, freeze shaped loaves wrapped in plastic for up to 3 months. Thaw at room temperature before baking. The baking stones should be preheated for 30 minutes before shaping dough to ensure even heat transfer. This bread improves with storage—day 2 or 3 is when the crumb truly softens and the crust develops deeper flavor. Slice with a serrated knife for clean cuts, and always use a bread knife—serrated edges are essential for that satisfying pull.

Step-by-step instructions for two loaf sourdough sandwich bread

Here’s the precise method for crafting two loaves with perfect oven spring and crusty exteriors.

In a large mixing bowl, combine the 0.5 cup active sourdough starter, 6 cups all-purpose flour, 2 cups whole wheat flour, 1.5 tbsp granulated sugar, and 2.5 tsp kosher salt. Mix these dry ingredients together until evenly distributed—this ensures uniform flavor and texture throughout both loaves.

Gradually add the 3.5 cups room temperature water while mixing with a wooden spoon or dough whisk. The dough will initially appear shaggy, which is normal. Once fully incorporated, add the 0.25 cup softened unsalted butter and continue mixing until it’s fully absorbed. This step creates the foundation for that signature sourdough flavor and open crumb structure.

Cover the mixed dough with a damp kitchen towel and let it rest for 30 minutes at room temperature. This autolyse stage allows the flour to fully hydrate and the gluten to begin developing naturally. After resting, turn the dough out onto a lightly floured surface and knead for 8-10 minutes by hand or 5 minutes in a stand mixer with a dough hook.

You’re looking for a smooth, slightly tacky dough that springs back slowly when poked. The whole wheat flour will make the dough slightly denser than all-purpose, so don’t be surprised if it feels heavier. The kneading develops the gluten structure necessary for that perfect airy crumb we want in sandwich bread.

Shape the dough into a ball, place it back in the bowl, cover with the damp towel, and let it ferment at 75°F for 3-4 hours. The dough should roughly double in size and develop visible bubbles on the surface. I use a proofing box for consistent temperature control—this is crucial for predictable fermentation and flavor development.

After the initial rise, perform a series of stretch-and-folds every 30 minutes for the first hour. Wet your hands and gently stretch the dough outward while folding it back toward the center. This technique strengthens the gluten structure and creates those beautiful open cells in the final crumb. The dough should feel slightly resistant but still soft to the touch.

Divide the fermented dough into two equal pieces and shape each into a tight boule. For sandwich bread, I prefer the classic round shape that creates an even crumb throughout. Place each boule seam-side down on a piece of parchment paper dusted with 0.25 cup cornmeal—this prevents sticking and adds to the crust’s character.

Cover the shaped loaves and allow them to proof at 75°F for 1-2 hours until they’ve risen about 50% and feel light when pressed gently. The surface should look slightly domed and feel springy to the touch. This final proofing stage is where the dough develops its maximum gas retention, which translates to that perfect oven spring when baked.

Preheat your oven to 450°F with the 2 whole baking stones inside for at least 45 minutes. Place the 1 sheet steam source on the lower rack. When ready, transfer the loaves to the hot stones and immediately pour 0.5 cup ice water into the steam source below.

Bake the loaves for 20 minutes with the steam, then remove the steam source and continue baking for another 20-25 minutes until the internal temperature reaches 205-210°F and the crust is deep golden brown. The bread should sound hollow when tapped on the bottom. This baking method creates that perfect combination of crispy crust and airy interior that makes great sandwich bread.

Remove the loaves from the oven and transfer them to a wire rack to cool completely for at least 2 hours. This cooling period allows the internal structure to fully set and the flavors to develop. Once cooled, use a sharp serrated knife to slice the loaves—this helps maintain their freshness longer.

For that final touch, sprinkle 1 tbsp sesame seeds over the top of each loaf while still slightly warm. The seeds will adhere better and add a subtle nutty flavor to complement the bread’s natural sweetness. Store wrapped in a bread bag at room temperature for up to 5 days or freeze for longer storage.

Creative variations of this 2 loaf sourdough sandwich bread

Herb-Infused Variations

Swap the sesame seeds for 1 tbsp fresh rosemary or thyme leaves before baking for an aromatic twist. Finely chop the herbs and mix them into the dough during the final kneading stage—this infuses the entire loaf with bright, herbal notes. For a Mediterranean touch, combine 1 tsp dried oregano with ½ tsp red pepper flakes in the dough. 🌿

Seeded Crunch Options

Add ¼ cup mixed seeds (sunflower, pumpkin, or flax) to the dough during the autolyse stage. For extra crunch, sprinkle 2 tbsp toasted sesame or poppy seeds on top before baking. I love a mix of sesame and black sesame for depth—just toast them separately to prevent burning. These seeds add texture contrast and nutritional benefits.