America's Test Kitchen Gluten-Free Bread Recipe: Science-Backed Rise Without Gluten Grain

This America's Test Kitchen gluten-free bread recipe proves you don't need gluten to achieve a light, airy loaf with professional texture. After years of testing, we've cracked the science behind gluten-free baking—hydration levels, precise binders, and oven adjustments that transform dense crumb into something truly satisfying.

The secret lies in xanthan gum's magic and a slow fermentation process that mimics gluten's natural structure.

What sets this recipe apart is its foolproof technique that delivers restaurant-quality results at home. We use a blend of rice flour and tapioca starch for structure, while psyllium husk powder mimics gluten's elasticity.

The dough requires minimal handling, proofing at room temperature for optimal rise, and baking with steam for that coveted crust. Every element is carefully calibrated to prevent common gluten-free pitfalls like dryness or gummy texture.

By following these exact steps, you'll end up with a golden-brown loaf that slices cleanly and toasts beautifully. The interior reveals an even crumb with just the right balance of tenderness and slight chew—no dense, crumbly disappointment here.

This bread holds its shape when sliced, stays fresh for days, and even freezes beautifully for on-demand toast.

The best part? This recipe adapts seamlessly to your favorite sandwiches, toast applications, or French toast recipes. We've included troubleshooting tips for altitude adjustments and storage techniques that maintain freshness. Let's bake bread that actually lives up to the gluten-full version—without any compromises.

Ingredients for america's test kitchen gluten free bread

Science-backed ingredients that transform gluten-free baking into restaurant-quality loaves.

The rice flour and tapioca starch blend is non-negotiable—Bob's Red Mill or King Arthur brands deliver the most consistent results. Psyllium husk powder is the secret weapon here; Frontier Co-op sells it in bulk at a fraction of specialty store prices. Xanthan gum can be found in the baking aisle of most grocery stores, but Whole Foods carries it in their bulk section if you prefer to measure exactly. For the yeast, Saf-Instant is my go-to because it activates faster, but standard active dry yeast works if that's what you have. The egg whites should be at room temperature—cold whites won't whip properly and can make your dough dense. If you're at high altitude, reduce the yeast by 20% to prevent overproofing.

No psyllium husk powder? Ground flaxseed at double the amount works in a pinch, though texture won't be identical. Substituting tapioca starch with arrowroot powder is fine, but expect slightly less chew. The milk can be any non-dairy alternative if needed—almond or oat milk both work well. For the olive oil, avocado oil is a great neutral alternative. If you're making this ahead, pre-mix all dry ingredients in a bowl with a fine-mesh sieve to avoid lumps. The dough will be sticky, but resist the urge to add extra flour—hydration is key for that light texture. For a seed-topped loaf, sprinkle sesame or poppy seeds on top before baking.

This dough ferments best at room temperature for 1-2 hours before baking—don't rush it. Store any leftovers wrapped tightly in plastic at room temperature for 2 days or freeze for 3 months. To revive frozen bread, wrap it in a damp towel and microwave for 20 seconds. The loaf reheats beautifully in a 350°F oven for 5-10 minutes with a cup of water on the bottom rack for steam. For sandwiches, slice with a serrated knife while still warm to prevent crumbling. The golden-brown crust stays crisp for 24 hours if kept airtight.

Step-by-step instructions for america's test kitchen gluten-free bread

This recipe transforms simple ingredients into a bread with real structure and texture—no gluten needed.

In a large mixing bowl, combine the 2.5 cups rice flour, 1.5 cups tapioca starch, 0.5 tbsp psyllium husk powder, and 0.25 tsp xanthan gum. Whisk vigorously for 2 minutes until no lumps remain. The psyllium husk powder is crucial here—it mimics gluten's elasticity when hydrated, while the xanthan gum binds everything together. Sift the dry ingredients through a fine-mesh sieve if you notice any clumps persisting.

In a separate small bowl, whisk together the 1.5 tsp instant yeast, 1.5 tsp salt, and 1 tbsp granulated sugar. This pre-mixing ensures even distribution of these active ingredients throughout the dough. Sprinkle this mixture over the dry ingredients and whisk again for 1 minute to fully incorporate. The sugar here isn't just for flavor—it helps activate the yeast and promotes browning during baking.

In a measuring cup, combine the 1.5 cups warm water (tested at 110°F—too hot will kill the yeast, too cold will slow activation) with the 1 tbsp olive oil and 0.5 cup milk. Whisk gently until the oil is fully emulsified. The warmth of the water activates the yeast while the oil adds richness that compensates for gluten's absence. Let this mixture sit for 5 minutes while you prepare the egg whites.

In a separate bowl, beat the 2 whole large egg whites with a hand mixer on medium speed until they form soft peaks. Fold these egg whites into the warm water mixture using a rubber spatula, being careful not to deflate them. The egg whites provide structure and help create that coveted soft crumb we associate with good bread. Gently pour this wet mixture into the bowl with the dry ingredients.

Using a rubber spatula, gently fold the wet and dry ingredients together until just combined—you should see no dry spots remaining, but don't overmix. The dough will be thick and sticky, almost like a wet batter. Let it rest for 5 minutes at room temperature. This brief rest allows the psyllium husk to begin hydrating and swelling, which is critical for developing that gluten-free structure.

After resting, fold the dough one more time to ensure complete integration. The texture should be uniform and slightly tacky. Here's the thing—this dough won't look like traditional bread dough. It's more like a thick, sticky paste, but that's exactly what we want. Transfer the dough to a lightly oiled 9x5-inch loaf pan (the size specified in the ingredients list), spreading it evenly with a wet spatula. The pan should be oiled to prevent sticking, but not so much that it interferes with browning.

Cover the loaf pan tightly with plastic wrap and let it prove at room temperature for 1 hour. You'll notice the dough begins to rise noticeably within the first 30 minutes, though the rise will be more subtle than with gluten-containing bread. The psyllium husk is doing its magic here, absorbing water and expanding to create that airy texture.

After proving, preheat your oven to 375°F. The oven should be fully preheated before baking—this ensures even heat distribution and proper browning. While the oven preheats, dust the top of the loaf with 1 tbsp cornstarch (sifted through a fine mesh) to create that beautiful crust. The cornstarch prevents the surface from becoming too sticky and promotes even browning.

Bake the loaf for 45-50 minutes until the top is deep golden brown and an instant-read thermometer inserted into the center reads 205°F. The bread is done when it sounds hollow when tapped on the bottom and pulls away cleanly from the sides of the pan. Don't be tempted to open the oven door early—this causes the bread to collapse.

Immediately after removing from the oven, transfer the bread to a wire rack to cool completely. This cooling period is crucial—it allows the internal structure to set properly. The bread will continue to firm up as it cools, developing that perfect crumb texture. Once completely cooled, slice with a sharp serrated knife for clean cuts. Each slice should reveal a tender crumb with just the right amount of chewiness—proof that gluten-free bread can be just as satisfying as traditional bread.

Dietary considerations for this america's test kitchen gluten free bread

Gluten-Free Binders

Xanthan gum and psyllium husk powder are the secret weapons in this recipe. The 0.25 tsp xanthan gum mimics gluten's ability to bind moisture and create structure, while the 0.5 tbsp psyllium husk powder expands when hydrated, giving that signature chewy texture.

I recommend Whole Foods bulk section for these ingredients—they're more affordable there and fresher than specialty stores. 🌱

If you're new to gluten-free baking, don't be tempted to skip these binders—your bread will crumble like a sad cake without them. The psyllium husk needs to hydrate properly, which is why we let the dough rest for 5 minutes after mixing.

This resting period is non-negotiable for developing that gluten-free structure.

Hydration Balance

The hydration level in this recipe is carefully calibrated to prevent dryness while maintaining structure. The 1.5 cups warm water combined with 0.5 cup milk creates the perfect moisture balance, but adding extra flour will ruin the texture.

Trust the recipe—this dough should be sticky, not dry. For extra insurance, use a kitchen scale to measure your wet ingredients precisely.

At high altitudes, reduce the total liquid by 2 tablespoons to compensate for the lower boiling point of water. The egg whites also play a crucial role in hydration—they should be at room temperature to whip properly and contribute to that light crumb.

Cold egg whites won't incorporate well and can make your bread dense.

Yeast Activation

The 110°F warm water is critical for proper yeast activation—too hot kills the yeast, too cold slows fermentation. I use a candy thermometer to check the water temperature, but if you don't have one, test it by dipping your finger in—it should feel warm but not hot.

The 1.5 tsp instant yeast will activate within 5 minutes of mixing with the warm water.

For best results, use yeast within its expiration date. If you're in a cool kitchen (65°F or below), let the dough proof at 80°F

Crust Development