Sourdough Discard Sandwich Bread Recipe delivers a soft, tender crumb with a gentle tang that slices clean and toasts like a dream. It suits sandwich fans and busy bakers, and it takes about 3 hours of hands-on and rise time, plus 1 hour to cool. I bake a loaf most Sundays while my dog stands guard by the oven, tail at full wag.
Why Sourdough Discard Sandwich Bread Recipe Is Worth It
Sourdough Discard Sandwich Bread Recipe gives you homemade sandwich bread with bakery-level softness and that subtle sourdough flavor. You use up extra sourdough starter without babysitting a long fermentation, and instant yeast keeps the timeline predictable.
The loaf stands tall for deli-style slices, makes excellent toast, and stays soft for days. You mix it in one bowl, shape one loaf, and enjoy a tender crumb that resists crumbling in lunchboxes.
Ingredients You Need
Main ingredients
- 240 g sourdough discard at 100 percent hydration, unfed is fine
- 360 g bread flour, or 330 g all-purpose plus 10 g vital wheat gluten for structure
- 30 g whole wheat flour, optional for flavor and color
- 200 g warm milk or water at about 100 to 110 F
- 25 g granulated sugar or 20 g honey
- 9 g fine sea salt
- 6 g instant yeast, or 8 g active dry yeast
- 40 g unsalted butter, softened, or 30 g neutral oil
- 10 g milk powder, optional for extra tenderness and browning
- Neutral oil or soft butter for greasing the pan
Notes and swaps:
- Use King Arthur bread flour for reliable strength. If you only have all-purpose, add vital wheat gluten or keep hydration on the lower side.
- Use water for dairy-free. Use oil instead of butter for a soft crumb with a lighter flavor.
- Use honey instead of sugar for a hint of floral sweetness. Reduce liquid by 5 to 10 g if the dough feels sticky.
- Discard can be cold or room temp. I keep mine in the fridge up to 7 days.
Equipment
- Kitchen scale for accuracy
- Stand mixer with dough hook, or a sturdy bowl and a dough scraper
- 9 by 5 inch loaf pan, or 8.5 by 4.5 inch for a taller dome
- Instant-read thermometer for doneness, optional
- Plastic wrap or a reusable bowl cover
- Parchment, optional for easy removal
Quick Tips & substitutions
- Aim for a soft, slightly tacky dough. Add a tablespoon of flour only if it sticks a lot.
- Want more tang? Chill the shaped loaf for 6 to 12 hours in the fridge, then bake.
- Only have active dry yeast? Bloom it in the warm liquid with sugar for 5 minutes before mixing.
- Go dairy-free with water and oil. Use milk powder or milk for a richer crumb.
- Use up to 25 percent whole wheat. Add 5 to 10 g extra water if the dough feels stiff.
- Proof in a warm spot at 75 to 80 F to keep timing on track.
- Use a Pullman pan without the lid for more uniform slices.
How to Make Sourdough Discard Sandwich Bread Recipe
Mix the dough
- In the mixing bowl, combine warm milk or water, sugar, and yeast. If using active dry, wait 5 minutes.
- Add sourdough discard, flours, salt, and butter. Mix on low until the dough comes together and no dry bits remain, about 2 to 3 minutes.
Knead to smooth
- Knead on medium-low until the dough turns smooth, elastic, and slightly tacky, about 8 to 10 minutes in a mixer or 10 to 12 minutes by hand.
- The dough should stretch thin without tearing. If it tears quickly, knead a bit longer.
Bulk rise
- Lightly oil the bowl, set the dough inside, and cover.
- Let it rise in a warm spot until puffy and roughly doubled, about 60 to 90 minutes, depending on room temp.
Shape the loaf
- Lightly flour the counter. Press the dough into an 8 by 12 inch rectangle.
- Tightly roll into a log from the short side, pinch the seam, and tuck the ends.
- Grease the loaf pan and place the log seam-side down in the pan.
Final proof
- Cover and let the dough rise until the top crowns about 1 inch above the rim, about 35 to 60 minutes.
- Near the end, heat the oven to 350 F. Brush the top with milk or a thin egg wash if you like extra color.
Bake
- Bake at 350 F for 35 to 40 minutes until the top looks deep golden and the center reads 195 to 200 F.
- If the top browns fast, cover it with foil for the last 10 to 15 minutes.
Cool and slice
- Set the pan on a rack for 10 minutes, then turn the loaf out.
- Cool at least 1 hour before slicing so the crumb sets. I know it smells wild, but that wait keeps slices neat.
Variations
- Honey Oat: Replace sugar with honey and sprinkle oats on top after a milk wash.
- Seeded: Knead in 40 g mixed seeds and sprinkle more on top.
- Cinnamon Swirl: Roll the rectangle with a layer of cinnamon sugar, then shape and proof. Seal the seam well.
- Cheddar Jalapeño: Fold in 80 g shredded sharp cheddar and 1 to 2 chopped jalapeños.
- Garlic Herb: Add 1 teaspoon garlic powder and 2 teaspoons dried Italian herbs to the dry mix.
Ways to Serve
- Classic BLT, turkey club, or grilled cheese with tomato soup
- French toast or cinnamon toast with butter and a drizzle of maple
- Breakfast sandwich with eggs, bacon, and cheddar
- Tuna melt or chicken salad with crisp lettuce
- Peanut butter and jam that stays tidy in lunchboxes
Storage
Keep the cooled loaf in a bread box or a zip-top bag at room temp for 3 to 4 days. Avoid the fridge, since it makes the crumb firm up faster. Freeze slices in a bag with parchment between pieces for up to 2 months. Toast straight from the freezer, or thaw on the counter in a bag to keep moisture in.

Sourdough Discard Sandwich Bread Recipe
Ingredients
Instructions
- In a large mixing bowl, whisk together the warm water, yeast, and sugar. Let sit for 5–10 minutes until foamy.
- Stir in the sourdough discard, melted butter, and egg (if using) until well combined.
- Add the bread flour and salt. Mix with a spoon or dough hook until a rough dough forms, then knead by hand or mixer for 8–10 minutes until smooth, soft, and slightly tacky. Add a little more flour if the dough is too sticky.
- Shape the dough into a ball, place it in a lightly oiled bowl, and cover with a clean towel or plastic wrap. Let rise in a warm place until doubled in size, about 60–90 minutes.
- Gently deflate the dough and turn it out onto a lightly floured surface. Press into a rectangle, then roll it up tightly into a log, pinching the seam closed.
- Place the shaped loaf seam-side down in a greased 9x5-inch loaf pan. Cover and let rise again until the dough crowns about 1 inch over the rim of the pan, 45–60 minutes.
- Near the end of the rise, preheat the oven to 375°F (190°C). Brush the top of the loaf with milk if desired for a softer, golden crust.
- Bake for 30–35 minutes, or until the top is deep golden brown and the internal temperature reaches about 190–195°F (88–90°C). If the top browns too quickly, tent loosely with foil during the last 10 minutes.
- Remove the bread from the oven and let it cool in the pan for 5–10 minutes. Carefully turn out onto a wire rack and cool completely before slicing for neat sandwich slices.
Notes
Approximate per 1 slice (1/12 loaf): 190 calories; fat 5 g; saturated fat 3 g; carbohydrates 30 g; fiber 1 g; sugars 4 g; protein 6 g; sodium 260 mg. Values are estimates and will vary based on flour type, butter brand, and slice thickness.
