Sourdough sandwich bread is the quiet hero of the bread world. It doesn’t shatter your teeth like an artisanal boule, and it doesn’t crumble under the pressure of a grilled cheese or a loaded sandwich. Instead, it’s soft, lightly tangy, tender, and strong enough to hold whatever you throw at it—peanut butter, deli meat, eggs, or jam.
This recipe is designed specifically for pan-baked sourdough sandwich bread: a loaf with a fine, even crumb, a soft crust, and slices that behave themselves. It’s made with natural leavening only (no commercial yeast), but it’s enriched just enough with milk and butter to give it that classic sandwich texture.
Whether you’re new to sourdough or looking to replace store-bought bread for good, this recipe aims to be practical, forgiving, and repeatable.
What Makes Sourdough Sandwich Bread Different?
Traditional sourdough boules are built for crust, chew, and open crumb. Sandwich bread has different goals:
- Soft crumb instead of large holes
- Thin, tender crust instead of crackling hardness
- Predictable shape for even slices
- Balanced flavor with gentle tang
To achieve this, we use:
- Milk instead of water (or a mix)
- Butter or oil for tenderness
- Honey or sugar for softness and mild sweetness
- A loaf pan for structure
The sourdough starter provides flavor and leavening, but the enrichment ensures the loaf stays soft for days.
Ingredients (1 Standard Loaf)
Dough
- 100 g active sourdough starter (fed, bubbly, at peak)
- 300 g milk, slightly warm (whole milk preferred)
- 30 g honey or sugar
- 30 g butter, melted and cooled (or neutral oil)
- 9 g salt
- 500 g bread flour (or unbleached all-purpose flour)
Optional Additions
- 1–2 tablespoons milk powder (extra softness)
- 25–50 g whole wheat flour (replace equal amount of white flour)
- 1 tablespoon olive oil (for extra tenderness)
Equipment You’ll Need
- Mixing bowl
- Kitchen scale (strongly recommended)
- Loaf pan (9 x 5 inch / 23 x 13 cm)
- Clean towel or plastic wrap
- Oven
- Cooling rack
Step 1: Prepare Your Starter
This recipe depends on an active starter, not discard.
Feed your starter 4–6 hours before mixing, using a 1:2:2 or 1:3:3 ratio (starter:flour:water). You want it:
- Doubled or tripled in volume
- Bubbly and aerated
- Slightly domed on top
- Smelling pleasantly tangy, not sharp or alcoholic
If your starter is sluggish, your bread will be too.
Step 2: Mix the Dough
In a large bowl, combine:
- 100 g active starter
- 300 g warm milk
- 30 g honey or sugar
- 30 g melted butter
Whisk or stir until mostly smooth. It doesn’t need to be perfect.
Add:
- 500 g flour
- 9 g salt
Mix with a spoon or your hands until all the flour is hydrated and a shaggy dough forms. Scrape down the sides of the bowl. The dough should feel soft and slightly tacky, but not soupy.
Cover and let the dough rest for 20–30 minutes.
This short rest (autolyse-style) allows the flour to hydrate and makes kneading easier.
Step 3: Knead Until Smooth
After resting, knead the dough:
By Hand:
Knead on a lightly floured surface for 8–10 minutes.
By Mixer:
Use a stand mixer with a dough hook on medium speed for 5–6 minutes.
You’re looking for:
- Smooth surface
- Elastic feel
- Dough that springs back when gently pressed
- Slight tackiness, but not sticky
If the dough feels too wet, resist adding flour immediately. Let it rest 10 minutes, then continue kneading. The dough will strengthen as gluten develops.
Step 4: Bulk Fermentation (First Rise)
Shape the dough into a ball and place it in a lightly oiled bowl. Cover.
Let it ferment at room temperature until doubled in size. This usually takes 4–6 hours, depending on:
- Starter strength
- Room temperature
- Dough hydration
Ideal dough temperature is around 75–78°F / 24–26°C.
Optional but helpful: perform one stretch and fold halfway through bulk fermentation to improve structure.
How to tell bulk is done:
- Dough has doubled
- Surface looks smoother and slightly domed
- Dough jiggles gently when you shake the bowl
- A finger pressed into the dough leaves a slow-filling indentation
Step 5: Shape for Sandwich Bread
Turn the dough out onto a lightly floured surface.
- Gently press it into a rectangle roughly the width of your loaf pan.
- Fold the top third down and the bottom third up like a letter.
- Roll the dough tightly from one short end into a log.
- Pinch the seam closed.
Tension is important here. A tight roll ensures an even crumb and good oven spring.
Place the dough seam-side down into a greased loaf pan.
Step 6: Final Proof
Cover the pan and let the dough rise until:
- The top is about 1 inch (2–3 cm) above the rim
- The dough slowly springs back when gently pressed
This typically takes 2–4 hours at room temperature.
Do not rush this step. Underproofed sandwich bread will be dense and tear when sliced.
Optional overnight proof:
Once the dough has risen about 50–70%, you can refrigerate it overnight. Bake straight from the fridge the next day.
Step 7: Bake
Preheat your oven to 375°F / 190°C.
Place the loaf on the center rack and bake for 40–45 minutes.
The loaf is done when:
- The top is golden brown
- The loaf sounds hollow when tapped
- Internal temperature is about 200°F / 93°C
If the top browns too quickly, tent loosely with foil for the last 10 minutes.
Step 8: Cool Completely
Remove the loaf from the pan and place it on a cooling rack.
Let it cool for at least 1 hour before slicing.
Cutting too early will result in a gummy crumb and uneven slices. Cooling finishes the baking process internally—this matters.
Texture, Flavor, and Storage
Texture
- Fine, even crumb
- Soft but sturdy slices
- Flexible, not crumbly
Flavor
- Mild sourdough tang
- Slight sweetness
- Rich but not heavy
Storage
- Room temperature: 3–4 days in a bread bag or wrapped towel
- Refrigeration: not recommended (dries bread)
- Freezer: slice first, then freeze up to 2 months
Variations and Adjustments
Whole Wheat Sandwich Bread
Replace 25–30% of the flour with whole wheat flour. Add 1–2 tablespoons extra milk.
Extra-Soft Bread
Add:
- 1–2 tablespoons milk powder
or - Replace 50 g flour with cooked, mashed potato
Less Tang
Shorten bulk fermentation and bake the same day.
More Tang
Extend bulk fermentation or proof overnight in the fridge.
Final Thoughts
This sourdough sandwich bread is meant to be useful. It’s the kind of loaf you bake every week, not just on special occasions. Once you’ve made it a few times, you’ll start to feel the dough instead of watching the clock—and that’s when sourdough really clicks.
