Preheat Oven: Preheat your oven to 175°C (350°F). Line a baking sheet with parchment paper.
Combine Dry Ingredients: In a large bowl, whisk together the almond flour, fine sea salt, cheese and any optional dry flavourings (garlic powder, dried herbs, sesame seeds).
Add Wet Ingredients: Pour the beaten egg into the dry ingredients. Mix well with a spatula or your hands until a cohesive dough forms. It might seem crumbly at first but will come together.
Roll Out Dough: Place the dough ball between two large pieces of parchment paper. Using a rolling pin, roll the dough out as thinly and evenly as possible, to about 2-3 mm thickness. The thinner you roll it, the crispier your crackers will be.
Cut Crackers: Carefully peel off the top piece of parchment paper. Using a pizza cutter or a sharp knife, cut the dough into your desired cracker shapes (squares, rectangles, or triangles).
Bake: Transfer the bottom piece of parchment paper with the cut crackers onto your prepared baking sheet. Bake for 12-15 minutes, or until the edges are golden brown and the crackers feel firm. Keep a close eye on them, as almond flour can brown quickly.
Cool: Remove from the oven and let the crackers cool completely on the baking sheet or a wire rack. They will crisp up further as they cool.
Store: Store cooled crackers in an airtight container at room temperature for up to 1 week.