Wholewheat Sourdough Bread

This a wholewheat sourdough sandwich bread that actually stays tender, slices cleanly, and tastes so good you'll forget it's healthier. This loaf bakes up with a beautifully crusty shell and a soft, tender interior, made with sourdough starter and a long cold ferment that deepens the flavor.

Love Bread? Try Dutch Oven Bread, Fluffy Condensed Milk Bread and Garlic Bread Rolls next.

You'll get bakery‑style results at home-no fancy equipment, no perfectionism, just one reliable method that balances rustic whole wheat with an active starter for a loaf that tastes like it came from your favorite artisan bakery.

Why you'll love this Wholewheat Sandwich Bread

• Soft, tender crumb that stays plush for several days, thanks to milk, butter, and an enriched sourdough dough.
• Sour dough makes the bread soft and tender, without the heavy, dense texture many whole grain loaves have.
• Beginner-friendly shaping: the loaf pan provides structure, so you don't have to master tension-building or boules first.
• Can be made ahead: Can be proofed overnight in a cool room for a simple morning bake or adjusted with fridge time or cooler liquids in warm climates.

Key Ingredients

• Sourdough starter: You need a vigorous starter at its peak so the loaf rises tall instead of baking up squat and dense. A ripe starter also adds mild tang and improves keeping quality.
• Whole wheat bread flour: It provides whole grain flavor and fiber but with the stronger gluten you need for a tall, soft sandwich loaf. Using only whole wheat will usually make the loaf much denser, so this recipe balances whole wheat with stronger white flour to keep the crumb light.
• Bread flour: Bread flour adds strength, structure, and tenderness, helping the dough rise high in the pan and slice cleanly for sandwiches. Omitting bread flour and using only all-purpose is possible but will slightly reduce structure and may yield a shorter loaf.
• Whole milk: Milk adds fat, lactose, and proteins that soften the crumb, improve browning, and keep the bread tender for 5-6 days. Using lower-fat milk (like 2%) works with only a small reduction in plushness; you can partially compensate by adding a bit more fat (such as an extra spoonful of butter).
• Butter: Butter is crucial for tenderness, flavor, and that soft, sandwich-style crumb. It is worked into the dough using a stand mixer so the fat emulsifies and distributes evenly; this is what makes the loaf feel rich but still airy.
• Honey: Honey lightly sweetens the loaf, balances the nuttiness of whole wheat, and helps fermentation by providing readily available sugars for the wild yeast. You can omit it if needed; the loaf will still rise, but flavor will be less rounded and the dough may ferment a bit more slowly.
• Salt: Salt strengthens gluten, moderates fermentation speed, and deepens flavor. Without enough salt, the dough can overproof quickly and taste flat.
• Water: It controls overall dough hydration. Combined with milk, it defines how soft and extensible your dough feels. Because whole wheat absorbs more liquid over time, the dough may feel slightly stickier at first and then tighten a bit as it hydrates during bulk fermentation.

How to Make Wholewheat Sourdough Bread

1. Prepare Starter Mixture

In a large mixing bowl, whisk the starter, milk, water, honey, and oil until the starter is no longer lumps in the liquid.

2. Add Dry Ingredients

Add the flours and salt, mixing to combine with Danish dough whisk, spoon or hands until a rough dough forms. There should be no dry flour.

3. Make the Dough

The dough will be sticky and firm. Cover with plastic wrap or damp towel and let rest for about an hour (as your schedule allows).

4. Make a Dough Ball

Turn the dough out onto a lightly floured surface and gently knead it into a semi-smooth ball. This won't take too long, less than a minute. The dough will feel smooth when it comes together.

5. First Rise (Ferment the Dough)

Place the dough in a bulk fermentation container (or clean bowl) and let it rise at room temperature (around 70-72º F), until doubled in volume. This could take 6-8 hours depending on the room and dough temperature. The dough will be domed and spring back slowly when given the poke test.

6. Roll The Dough Into Rectangle

Turn the dough out onto a lightly floured surface, shaping it into a rough rectangle. Use your fingertips to gently tap out any large bubbles that may form. Let the dough rest for 5 minutes.

7. Roll the Dough into a Log

During the rest, prepare your loaf pan by giving it a light oil coating. Starting from the short side, roll the dough into a log (sausage shape) tucking the ends underneath for a smooth top.

8. Place Dough into Bread Pan

Gently scoop the dough up, pull it towards you to tighten its shape and place into your pan, with the seam side down.

9. Second Rise

Cover the dough with plastic wrap or damp towel and let it rise until it is just doming the top of the loaf pan. (1-2 hours)

8. Bake

Preheat the oven to 375º F. and bake the loaf on the center rack (ensuring there is room for the loaf to grow taller) for 40-45 minutes or until the temperature reaches 190-200º F with an instant digital thermometer.

9. Remove the Bread and Cool

Once completed, remove the loaf from the oven and let cool for 10 minutes. If desired, coat the top of the loaf with softened butter, letting it melt into the crust. Remove the bread from the pan and let cool completely before slicing.

Tips for Success

• During the final proof, if the dough has risen up above the top of the pan to the final shape that you would like, it has proofed too far and the top crust will likely get lumpy and full of air pockets in the top crust.
• No Large Air Bubbles: Don't be afraid to lightly tap out the air bubbles during the shaping process. Sandwich bread should have a tighter crumb so large air bubbles are not desired.
• Make Sure the Dough Doubles: This loaf is wonderfully soft, simple to make, and nearly full proof. Just watch the proofing and ensure that the dough expands until doubled each time.

My loaf is dense and doesn't rise much

Possible causes are

• Underactive starter: It must be at peak activity-doubled, bubbly, and not collapsed-to lift the loaf.
• Under-kneaded dough: Gluten needs to be well developed, especially with whole wheat, to trap gas.
• Too much whole wheat or not enough bread flour: Increasing whole wheat beyond the tested ratio makes the loaf heavier.

Solutions:

• Strengthen your starter with a few consistent feedings and adjust timing so you mix at peak.
• Knead until the dough is smooth, elastic, and pulls from the bowl sides.
• Stick close to the tested flour mix until you're confident about adjusting hydration and structure.

The top of my loaf cracks or splits during the final rise

Shaping the dough too tightly so the surface has no slack as it expands. Make sure to shape a bit more gently next time, creating surface tension without over-tightening. Allow the dough to relax during the pre-shape and rest before final shaping.

My dough over-proofed overnight

Signs: Dough is very bubbly, slack, and collapses easily when handled.

• In warm homes, mix earlier and bulk ferment during the day, then shape and bake in the evening.
• Use cooler milk or water at mixing to slow early fermentation.
• For very warm climates, use the refrigerator for part of the bulk or final proof, then finish at room temperature.

The top is too dark or almost burnt before the loaf is cooked through

Possible cause is oven running hotter than its dial or too high a bake temperature for your oven.

• Use oven thermometer to verify your true temperature.
• Reduce the baking temperature by a small amount, and check internal temperature when the color looks right.
• Tent loosely with foil if browning is happening too quickly; the loaf is done when the center reaches around 200-205°F.

Is it safe to leave dough with milk at room temperature all night?

When the dough is properly fermented with vigorous yeast, the yeast consume the sugars in the milk more quickly than harmful bacteria can multiply, especially in a cool room.

The recipe is designed around a cool overnight environment, not a hot kitchen; if your space is warm, shorten the room-temperature time or use the refrigerator for part of the ferment.

FAQ

• Can I use all-purpose flour instead of bread flour? Yes, you can substitute all-purpose flour, though the texture may be slightly softer and the crust thinner. Bread flour gives the best structure and chew. With all-purpose flour the top crust was thin.
• Can I make wholewheat sourdough bread dairy free? I tested this recipe with both dairy and non-dairy milk. It worked well in each situation, but the best flavor and crust was with whole milk or barista oat milk and bread flour.
• Can I do an overnight cold proof instead of a same-day bake?
  This recipe is designed for a same-day bake, but you could experiment with a cold final proof in the fridge overnight after shaping. Let it warm for about an hour before baking, and let us know how it turned out.
• Can I use whole wheat flour for the entire recipe?
  I don't recommend it unless you're adjusting hydration and fermentation time. The loaf may be too dense with 100% whole wheat.
• Why did my top crust separate or puff oddly?
  It's likely over-proofed during the final rise. Watch the dough closely and bake when it just domes over the edge of the loaf pan.
• What's the best pan for sandwich bread?
  A 9x5 inch or Pullman loaf pan works well. For extra height and squareness, a Pullman pan with the lid off is ideal.
• Can I Proof the Dough Overnight? I did not test this with an overnight cold proof, only as a same day/overnight bread. I found this timing worked best: Mix the dough up an hour before going to bed. Let it bulk proof overnight. In the morning, shape the dough and let rise for an hour or so, then bake when it's ready.
• Can I make this recipe without a stand mixer? A stand mixer does the heavy work of incorporating butter into the dough, which is challenging by hand. You can do it by hand, but expect a longer, more intensive mixing process.
• Can I swap milk for water? Water alone will remove much of the softness and staying power that make this a true sandwich bread. Milk provides richness, tenderness, and better browning, so it's not recommended to replace it entirely with water.
• Can I use sprouted or freshly milled wheat? Yes-bakers report excellent results with sprouted wheat and freshly milled flour, though these may absorb liquid differently and benefit from small hydration tweaks.
• Can I proof the shaped loaf in the fridge overnight? You can refrigerate the shaped loaf to slow the rise, then bring it back to room temperature and let it finish proofing until it reaches the top of the pan before baking.
• How long does whole wheat sourdough sandwich bread stay fresh? When stored properly at room temperature in a plastic bag, cut side down, the loaf stays soft and tasty for about 5-6 days.

Lower-fat Versions

• Use 2% milk instead of whole milk; expect only a very small reduction in plushness.
• To compensate slightly, you can add a little extra butter.

Whole wheat and flour adjustments

• All whole wheat: Increasing the whole wheat portion will make the loaf denser; the original ratio is designed to balance whole grain flavor with a soft, fluffy crumb.
• All-purpose instead of bread flour: You can use all-purpose in place of bread flour; the loaf will still be delicious but may rise a bit less and have less chew.
• Rye variations: Swapping all the whole wheat for rye will require hydration adjustments because rye absorbs water differently and can make the dough too wet as written. Some bakers successfully swap only the whole wheat portion for fresh-milled or rye blends, but this works best when you're comfortable tweaking hydration.

Add-ins and flavor boosts

Stir in or layer these during shaping for more interest:

• Seeds: sunflower, pumpkin, sesame, or flax (keep amounts moderate so the dough can still rise well).
• Nuts: chopped walnuts or pecans, lightly toasted.
• Warm spices: cinnamon and a little extra sweetener for a breakfast-style loaf.

Add-ins should be dry or only lightly moist and folded in gently so they don't tear the gluten.

Storage, leftovers, and freezing

• Room temperature storage: Once completely cool and sliced, store the bread in a plastic bag with the cut side down on the counter. Thanks to the combination of milk, butter, and sourdough fermentation, the bread stays soft and flavorful for about 5-6 days.
• Do not refrigerate: Avoid refrigerating, which tends to dry sandwich bread and make it stale faster.
• Freezing: Slice the cooled loaf before freezing so you can pull out just what you need. Wrap tightly in plastic, then in a freezer bag or reusable container.
• Toast from frozen: Thaw slices at room temperature or toast straight from frozen.
• Leftover or slightly stale slices are excellent as French toast, croutons, or grilled sandwiches.

More Bread Recipes

• Garlic Bread Rolls
• Dutch Oven Bread
• Skillet Focaccia
• Tomato Garlic Focaccia