Preheat the oven to 325°F, and line a large baking sheet with parchment paper.
Mix together all of the ingredients except for the salt.
1 cup unfed sourdough discard, ¾ cup sharp cheddar cheese, 2 tablespoons unsalted butter, 2 teaspoons ranch seasoning
Pour the dough onto the prepared baking sheet and spread as thin as possible (without being see-through).
Bake for 15 minutes then use a cookie cutter or a pizza cutter to cut crackers into desired size and shape.
Sprinkle the top with flaky salt, then return to the oven for approximately 20-25 minutes or until slightly golden and crisp.
When cool enough to handle, break apart the crackers. Add flaky salt and extra ranch seasoning if desired.
Flaky salt