Name: Sourdough Discard Sandwich Bread Recipe
Prep time: 20 min
Cook time: 35 min
Total time: 180 min
Ingredients: 1 cup sourdough starter discard, unfed and at room temperature; 3 cups bread flour, plus more as needed; 2 tablespoons granulated sugar; 2 teaspoons instant yeast; 1 1/4 teaspoons fine salt; 3/4 cup warm water (about 105–110°F); 3 tablespoons unsalted butter, melted and cooled slightly; 1 large egg; 1 tablespoon neutral oil or melted butter, for greasing the pan

Sourdough Discard Sandwich Bread Recipe gives you soft, sliceable, slightly tangy bread that tastes like a bakery loaf but fits into a busy weeknight schedule in about 3 hours total. It works perfectly for anyone who keeps a sourdough starter, hates wasting discard, and wants an easy everyday sandwich bread that kids and adults both devour. I bake this loaf almost every Sunday, and my family now treats “store bread” like a backup plan.

Why Sourdough Discard Sandwich Bread Recipe Is Worth It

This loaf uses sourdough discard for flavor and tenderness, but instant yeast handles the rise, so you skip the long ferment. You get that gentle sourdough tang, a soft crumb, and a thin, flexible crust that slices cleanly for sandwiches and toast.

You also turn what usually goes into the trash into something that tastes like a bakery treat. The dough stays forgiving, so newer bakers can handle it without stress, and experienced bakers can tweak hydration and add-ins to play around.

“This Sourdough Discard Sandwich Bread Recipe finally turned my ‘oops, too much starter’ problem into the best sandwich bread in my kitchen ★★★★★”

Ingredients You Need

Dough ingredients

1 cup (240 g) active sourdough discard, at room temperature
- Use 100 percent hydration discard if possible. If your discard feels very thick, add 1 to 2 teaspoons extra water.
1 cup (240 g) warm milk, about 100 to 105°F
- Use whole milk for richer flavor. Use 2 percent or unsweetened almond or oat milk if you prefer.
2 tablespoons (28 g) unsalted butter, melted and slightly cooled
- Use a neutral oil like avocado or light olive oil if you want a dairy free version.
2 tablespoons (25 g) granulated sugar
- Swap with honey or maple syrup in equal weight. The sugar helps browning and feeds the yeast.
2 teaspoons (7 g) instant yeast
- Use active dry yeast if needed and bloom it in the warm milk for 5 to 10 minutes before mixing.
3 cups (360 g) bread flour
- Use all purpose flour if that is what you have. Bread flour gives a chewier, higher loaf.
1 teaspoon fine sea salt
- Table salt works too, but use a slightly scant teaspoon.

Optional add ins

2 tablespoons milk powder for extra tenderness
1 tablespoon softened butter for brushing the top after baking
2 tablespoons seeds (sesame, sunflower, or everything bagel mix) for topping

Equipment list

Kitchen scale or measuring cups and spoons
Large mixing bowl
Sturdy spoon or dough whisk
Stand mixer with dough hook (optional, but very helpful)
8.5 x 4.5 inch or 9 x 5 inch loaf pan
Plastic wrap, clean towel, or reusable cover
Oven thermometer if your oven runs hot or cool
Wire rack for cooling
Serrated bread knife for clean slices

Quick Tips & substitutions

Use discard that smells pleasantly tangy, not harsh or funky.
Warm your milk slightly so the dough rises faster, but keep it below 110°F so you do not kill the yeast.
Oil your hands lightly when handling sticky dough instead of adding too much extra flour.
Use all purpose flour and reduce the milk by 1 to 2 tablespoons if the dough feels very soft.
Swap butter with neutral oil and milk with plant milk to keep the loaf dairy free.
Brush the top with milk before baking for a softer crust, or with egg wash for a shinier, darker crust.
Use a thermometer and bake until the center hits about 190 to 195°F for a fully baked but still tender loaf.
Let the bread cool at least 1 hour before slicing so the crumb sets and slices stay neat.

How to Make Sourdough Discard Sandwich Bread Recipe

Mix the wet ingredients

Pour the warm milk into a large mixing bowl. Whisk in the sourdough discard until it looks mostly smooth and milky. Add the melted butter and sugar, then whisk again until the mixture looks uniform.

Add dry ingredients and bring the dough together

Sprinkle the instant yeast over the liquid and stir briefly. Add the bread flour and salt on top. Stir with a sturdy spoon or dough whisk until the dough forms a shaggy, sticky ball and no dry flour streaks remain.

If the dough looks extremely sticky and soupy, add 1 tablespoon flour at a time until it holds together. If it feels very stiff and dry, drizzle in 1 teaspoon water at a time. Aim for a soft dough that feels tacky but not impossible to handle.

Knead the dough

Transfer the dough to a lightly floured surface or keep it in the bowl if you prefer. Knead by hand for 8 to 10 minutes until the dough feels smooth, stretchy, and slightly tacky. If you use a stand mixer, attach the dough hook and knead on medium low speed for about 6 to 8 minutes.

Test the dough by stretching a small piece between your fingers. It should stretch thin without tearing quickly, which bakers call the windowpane test. When the dough passes that test, shape it into a smooth ball.

First rise

Lightly oil a clean bowl and place the dough ball inside, smooth side up. Cover the bowl with plastic wrap, a lid, or a damp towel. Set the bowl in a warm spot, such as inside the oven with the light on or near a warm stove.

Let the dough rise until it doubles in size, about 60 to 90 minutes depending on room temperature and starter strength. If your kitchen runs cool, give it more time and stay patient. The dough should look puffy and feel airy when you poke it gently.

Shape the loaf

Lightly flour your work surface and turn the risen dough out of the bowl. Press it gently into a rectangle about 8 by 10 inches, pushing out large air bubbles. Fold the short side closest to you up toward the center, then fold the top edge down over that fold, like a letter.

Roll the dough into a tight log from the short side, sealing the seam with your fingers. Tuck the ends under slightly so the loaf fits your pan. Grease your loaf pan and place the dough inside seam side down.

Second rise

Cover the loaf pan loosely with plastic wrap or a towel. Let the dough rise again until it crowns about 1 inch above the rim of the pan. This usually takes 40 to 60 minutes in a warm kitchen.

Near the end of this rise, preheat your oven to 350°F. If you want a soft top crust, brush the risen loaf gently with milk. If you want a shiny, deeper color, brush with a beaten egg.

Bake the bread

Place the loaf pan on the middle rack of the preheated oven. Bake for 30 to 35 minutes until the top looks golden brown and the loaf sounds hollow when you tap it. Check the internal temperature with a thermometer and aim for 190 to 195°F in the center.

If the top browns too quickly, tent the loaf loosely with foil during the last 10 minutes. When the bread finishes baking, remove the pan from the oven and set it on a wire rack.

Cool and slice

Run a butter knife around the edges of the pan to loosen the loaf. Turn the bread out onto the wire rack and set it upright. Brush the top with a little softened butter if you want a tender, flavorful crust.

Let the loaf cool at least 1 hour before slicing. Use a sharp serrated knife and gentle sawing motions for clean slices. Enjoy your Sourdough Discard Sandwich Bread Recipe plain, toasted, or stacked high with your favorite fillings.

Recipe Variations

Gluten friendly version: Use a 1 to 1 gluten free bread flour blend and add 1 extra teaspoon xanthan gum if the blend does not include it, then handle the dough gently since it behaves more like thick batter.
Vegan version: Use plant milk, neutral oil instead of butter, and skip egg wash; brush with plant milk instead.
Low sugar version: Cut the sugar to 1 tablespoon; the bread will still rise, but the crust will brown a little less.
Whole wheat version: Swap up to 1 cup of bread flour with whole wheat flour and add 1 to 2 teaspoons extra water if the dough feels stiff.
Seeded loaf: Knead in 3 to 4 tablespoons mixed seeds and sprinkle more on top after brushing with milk or egg.
Herb and garlic loaf: Add 1 to 2 teaspoons dried Italian herbs and 1 teaspoon garlic powder to the flour for a savory sandwich bread.
Cinnamon swirl: Roll the dough into a rectangle, sprinkle with a mix of cinnamon and sugar, then roll up and place in the pan for a breakfast style loaf.

Ways to Serve

Classic turkey or chicken sandwiches with lettuce, tomato, and mustard or mayo.
Grilled cheese with cheddar or mozzarella and a side of tomato soup.
Toast with butter and jam, peanut butter and banana, or avocado with a sprinkle of salt.
French toast slices with cinnamon and maple syrup for breakfast.
Egg salad or tuna salad sandwiches for easy lunches.
Toasted croutons for salads or soups when the loaf gets a day or two old.

Storage Success

Let the Sourdough Discard Sandwich Bread Recipe cool completely, then store it at room temperature in a bread box, large zip bag, or wrapped in foil for up to 3 days. Keep the cut side facing down on a cutting board if you leave it out between uses. For longer storage, slice the loaf, place parchment between stacks if you like, and freeze in a freezer bag for up to 2 months.

Toast slices straight from the freezer or let them thaw on the counter. Avoid the fridge, since cold temperatures dry bread out faster and make the crumb firm. With these habits, your sourdough discard sandwich bread stays soft, flavorful, and ready for sandwiches all week.