Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper.
In a bowl, mix 1 cup (200 g) unfed sourdough discard, 3 tablespoons melted unsalted butter, 1 tablespoon all-purpose flour, and 1/4 teaspoon salt until fully combined and smooth.
Place the dough between two sheets of parchment paper. Roll the dough evenly until very thin, about 1/16-inch thick.
Transfer the top sheet of parchment (with the rolled dough) onto the prepared baking sheet and peel off the top parchment.
Brush the dough lightly with olive oil. Evenly sprinkle 1–2 teaspoons Italian seasoning and 1–2 tablespoons grated Parmesan over the surface.
Bake on the middle rack for 15 minutes.
Remove the baking sheet from the oven and, while the cracker sheet is still warm, use a pizza cutter or sharp knife to cut the dough into squares or desired shapes.
Return the cut crackers to the oven and bake an additional 10–15 minutes, watching closely and removing when the edges are browned and the crackers are crisp.
Remove from the oven and immediately sprinkle with 1/2 teaspoon flaked sea salt. Let the crackers cool completely on the baking sheet or a wire rack before separating and serving.
Notes
Notes
Notes:
Store cooled crackers in an airtight container at room temperature for up to one week.