Gluten-Free Sourdough Discard Crackers
Crispy, flaky crackers made from gluten-free flour and sourdough starter discard, customizable with savory toppings like everything bagel seasoning, za'atar, dukkah, and fresh or dried herbs. The psyllium husk creates structure while coconut oil delivers crispness. Perfect for snacking, entertaining, or using up starter between bakes. This version celebrates zero-waste baking and accommodates gluten sensitivity without sacrificing texture or flavor complexity.
Ingredients
- 1 cup gluten-free whole grain flour blend, such as oat, sorghum, brown rice, or millet
- 2 tablespoon nutritional yeast, or 4 tablespoonsparmesan or nutritional yeast1:1tags:umamidairy-freeadds dairy
note:adds salty depth or maintains vegan
Full guide → - ¼ oz whole psyllium husk, 1.5 tablespoonsground flax1:1tags:binding
note:slightly nuttier flavor, similar binding
- ½ teaspoon sea salt
- 3 ¾ tbsp refined coconut oil, or olive or avocado oil
- 8 tbsp lukewarm water, or room temperature
- 9 oz gluten-free sourdough starter discard
- 2 tablespoon everything bagel seasoning, optional(optional)fleur de sel + sesame seeds + poppy seeds + dried onion + dried garliccustomtags:substitution
note:recreate blend
- 2 tablespoon poppy and/or sesame seeds, optional(optional)
- 1 ½ teaspoon za'atar, optional(optional)
- 2 tablespoon dukkah, optional(optional)
- 2 teaspoon dried herbs, rosemary, thyme, basil, or dill(optional)
- ¼ cup fresh herbs, optional(optional)
- 2 tablespoon fresh edible flower petals, optional(optional)
- ¼ cup vegan or regular cheese, optional(optional)
Instructions
- 1
Whisk together dry ingredients: gluten-free flour, nutritional yeast, psyllium husk, and salt.
- 2
Add sourdough discard, water, and oil. Mix until combined. Let rest five minutes if needed for psyllium to absorb, then adjust consistency with flour if too soft.
- 3
Divide dough in half, flatten into rectangles on parchment, wrap tightly, and refrigerate at least one hour or up to several days.
- 4
Preheat oven to 325°F. Roll one dough portion paper-thin between parchment, trimming edges.
- 5
Brush with oil and distribute chosen toppings evenly. Optional: gently roll pin over toppings to press in.
- 6
Cut into pieces in grid pattern and transfer to baking sheet.
- 7
Bake until all crackers are crisp and break easily, checking at 22 minutes.
Tips
Psyllium husk absorbs moisture slowly; let dough rest five minutes before assessing texture, preventing over-flouring that toughens crackers.
Coconut oil produces the flakiest texture due to its solid state at room temperature, but olive or avocado oil work if you prefer denser crackers.
Roll dough between parchment sheets to prevent sticking and achieve thin, even layers essential for uniform crispness.
Good to Know
Airtight container at room temperature for up to two weeks. Crackers soften over time; crisp in 300°F oven for 5 minutes if needed.
Dough keeps refrigerated up to several days before rolling and baking. Unbaked dough also freezes well for up to one month.
Serve at room temperature as a snack, appetizer, or alongside soups, dips, and charcuterie boards. Variety of toppings makes them suitable for casual gatherings or elegant entertaining.
Common Mistakes
Over-mix dough to avoid tough crackers; combine just until incorporated.
Roll too thick to avoid chewy instead of crispy centers; aim for paper-thin consistency.
Skip psyllium resting time to avoid dough too soft to roll; let it hydrate fully.
Substitutions
Dairy-Free Swaps
note:adds salty depth or maintains vegan
Full guide →General Alternatives
note:slightly nuttier flavor, similar binding
note:simplifies sourcing, may adjust hydration
note:recreate blend
FAQ
Can I use regular sourdough starter instead of discard?
Yes, but reduce amount to 0.75 cup active starter (fed and bubbly) since active starter is wetter. Adjust water slightly downward. Discard uses less precision in starter condition, making it ideal for this recipe.
What if my dough is too sticky to roll?
Refrigerate longer (overnight is fine) or dust parchment generously with flour. Add psyllium in 0.5-teaspoon increments if dough remains soft after five-minute rest. Avoid adding too much flour, which toughens crackers.
How long do crackers keep and can I freeze them?
Airtight container, two weeks at room temperature. Freeze baked crackers up to three months; thaw at room temperature or crisp briefly in oven. Unbaked dough freezes one month; thaw overnight in fridge before rolling.