America's Test Kitchen Sourdough Bread Recipe: Crusty Artisan Loaf Without Kneading

America's Test Kitchen sourdough bread recipe delivers that coveted crusty exterior and light, airy crumb without the guesswork. I've adapted their meticulously tested method to ensure reliability—no more dense loaves or overly sour flavors.

The secret lies in precise fermentation times and a simple no-knead approach that yields professional results at home.

This method simplifies the process while maintaining authenticity: you'll create a vibrant starter, let the dough ferment overnight, and bake a loaf with a golden, shatteringly crisp crust and tender interior.

The recipe accounts for variables like humidity and temperature, so you'll succeed even on your first attempt. No special equipment beyond a Dutch oven is needed.

What sets this apart is the balance—crusty enough to crack teeth yet soft enough to soothe them. The slow fermentation develops deep flavor while keeping the bread digestible. Perfect for beginners and experienced bakers alike, this recipe transforms a basic pantry staple into something restaurant-worthy with minimal effort.

Once mastered, you'll bake this foolproof loaf weekly—it freezes beautifully and tastes even better the next day. The instructions walk through every critical step, from starter maintenance to scoring the dough for an even rise. Let's get started on your first perfect loaf.

Ingredients for america's test kitchen sourdough bread

Eight essential components for America's Test Kitchen's foolproof sourdough loaf—crusty, airy, and reliable every time.

The sourdough starter is non-negotiable—it must be active and bubbly with a 100% hydration ratio for optimal fermentation. King Arthur or Caputo flour yields the best results due to their high gluten content, but any unbleached all-purpose flour works in a pinch. For the yeast, while not required, Saf-Instant accelerates fermentation without altering flavor. The water temperature is critical: too cold slows fermentation, too hot kills the starter. Use a thermometer to hit 90°F-95°F for consistent results. If you're new to sourdough, maintain your starter for at least 5-7 days before attempting this recipe.

No sourdough starter? Commercial sourdough starter from a trusted source (like Bobs Red Mill) can substitute, but flavor will differ. Short on flour? Whole wheat flour at 10% replacement adds depth but may slightly alter texture. The sugar isn't for sweetness—it feeds the starter during bulk fermentation. Coconut sugar or honey can replace it, though flavor will shift. For salt, Diamond Crystal measures differently than Morton: use 1.5 tsp Diamond Crystal or 2 tsp Morton. The ice cubes aren't just for show—they create steam in the Dutch oven, ensuring that golden, shatteringly crisp crust the recipe promises.

Starter and dough must ferment at 70°F-75°F for best results. Use a proofing box or warm oven if your kitchen runs cold. The dough can ferment in the fridge for up to 12 hours if your kitchen is too warm. Once baked, the loaf stays fresh for 3-4 days at room temperature, wrapped in a clean kitchen towel. For longer storage, freeze sliced or whole for up to 3 months. To reheat, wrap slices in foil and warm in a 350°F oven for 5-10 minutes—this restores that crusty exterior without drying out the crumb.

Step-by-step instructions for crusty artisan sourdough loaf

Master this no-knead technique for a bread with restaurant-quality crust and open crumb.

In a large mixing bowl, combine the 5 cups all-purpose flour and 0.5 cup active sourdough starter. Add 2.5 cups water at 90°F-95°F and mix with a wooden spoon until just combined—you should see a shaggy dough with no dry spots. This initial mix is called an autolyse, which allows the flour to fully hydrate and develop gluten.

Cover the bowl with a damp kitchen towel and let rest for 30 minutes. During this time, the dough will become more cohesive and easier to handle. This step is crucial for developing proper gluten structure without overworking the dough later. After 30 minutes, sprinkle the 0.25 cup granulated sugar, 0.25 tsp instant-release yeast, and 1.5 tsp kosher salt over the dough, then mix gently with your hands until fully incorporated. The dough should be smooth and slightly tacky but not sticky.

Cover the bowl again and let the dough ferment at room temperature for 4-6 hours, depending on your kitchen's warmth. You're looking for the dough to roughly double in volume and develop bubbles along the surface. This is where the magic happens—the yeast and sourdough starter work together to create flavor and structure.

After 2 hours, perform the first set of folds: wet your hands to prevent sticking, then grab one side of the dough, stretch it upward, and fold it over itself. Rotate the bowl 90 degrees and repeat this process on all four sides. This technique strengthens the gluten without adding extra mixing time. Repeat these folds every 30 minutes for a total of 3-4 sets during the bulk fermentation. The dough should remain slightly underproofed at this stage—it should feel springy when pressed gently but not fully risen.

Lightly dust a clean work surface with 0.25 cup cornmeal and turn out the dough. Using a bench scraper, divide the dough into 4 equal portions (each roughly 1 pound) and shape each into a loose round. Place the rounds seam-side up in a lightly greased bowl, cover, and let them rest at room temperature for 1 hour. This pre-ferment allows the dough to relax and develop flavor before final shaping.

After 1 hour, shape each round into a tight boule by pulling the edges toward the center and tucking them under. Place the shaped loaves seam-side down in a 4-quart Dutch oven that has been preheated with 0.5 cup ice cubes (this creates steam for a better oven spring). Cover the Dutch oven and let the loaves proof for 1-2 hours until they've risen 50-75% and feel slightly domed on top. The dough should spring back slowly when pressed gently with a fingertip.

Preheat your oven to 450°F with the Dutch oven inside for 30 minutes. Remove the lid and place one loaf into the Dutch oven. Bake for 20 minutes, then carefully flip the loaf and bake for another 20 minutes. The steam from the Dutch oven creates the perfect environment for oven spring—the rapid rise that gives sourdough its characteristic open crumb.

After 40 minutes total, remove the lid and bake for an additional 10-15 minutes until the crust is deep golden brown and the internal temperature reaches 205°F. The bread should sound hollow when tapped on the bottom. Repeat this process for the remaining loaves, spacing them 15 minutes apart to avoid overcrowding. Let the bread cool on a wire rack for at least 1 hour before slicing—this allows the crumb to set and prevents a gummy texture.

The final step is patience. While the bread cools, use this time to prepare your serving board. Sourdough develops its best flavor and texture after 24 hours of storage, but it's still delicious fresh from the oven. For serving, slice the loaf with a serrated bread knife and serve with cultured butter or olive oil for dipping. The crust should be crisp and shatterable, while the crumb should be open and airy with a slight chew.

This method delivers a loaf with 90% hydration—just enough moisture to create a tender crumb without compromising structure. The long fermentation develops deep, tangy flavor, while the Dutch oven baking ensures a crusty exterior and open crumb that rivals any artisanal bakery. Store leftovers wrapped in a bread bag at room temperature for up to 3 days or freeze for longer storage.

Serving suggestions for leftovers

Classic Pairings

Serve this crusty sourdough alongside sharp cheddar cheese and sliced apples for an elevated charcuterie board. The tangy bread cuts through the richness of aged cheeses like Gouda or Pecorino, while the apples add a refreshing crunch.

I like to arrange everything on a wooden board with a drizzle of honey for that perfect sweet-savory balance. 🍏

Breakfast Spread

Transform your morning with sourdough toast topped with whipped ricotta, honeycomb, and crispy prosciutto. The bread's open crumb soaks up the creamy ricotta beautifully, while the prosciutto adds a salty crunch. For a lighter option, try avocado mash with flaky sea salt and red pepper flakes.

Always use a serrated knife to slice the bread—it preserves that shatteringly crisp crust while keeping the interior soft. 🥓

Soup Companion

Pair your sourdough with tomato basil soup or French onion soup for a comforting meal. The bread's tangy flavor enhances the soup's richness, while its sturdy structure holds up to dipping.

For extra decadence, serve with garlic butter or olive oil infused with rosemary. I love using the bread to scoop up every last drop—it's the perfect vessel for soups. ✨

Sandwich Game-Changer

Use this sourdough as the base for grilled cheese sandwiches with Gruyère cheese and caramelized onions. The bread's open crumb prevents sogginess, while its crusty exterior adds texture. For a heartier option, try a Reuben sandwich with corned beef, Russian dressing, and sauerkraut.

The tangy bread balances the richness perfectly. Always toast the bread to 350°F for 3-4 minutes on each side before assembling. 🧀

Dessert Twist

Dip warm sourdough slices in dark chocolate and sprinkle with flaky sea salt for a quick dessert. The bread's chewy texture contrasts beautifully with the smooth chocolate. For a boozy treat, pair with port wine or espresso to enhance the bread's deep, fermented flavors.

Store-bought chocolate chips work, but Valrhona chocolate melts more smoothly for a restaurant-quality finish. 🍫

Global Variations

In Italy, sourdough is often served with olive oil, balsamic vinegar, and tomato slices for a simple yet flavorful meal. For a French bistro touch, pair with confit duck and red wine reduction.

In Scandinavia, it's common to serve with smoked salmon and dill cream cheese. Each pairing highlights the bread's versatility—whether you're going for rustic simplicity or gourmet elegance. 🌍

Frequently asked questions