- Place the sesame seeds on a baking tray and set aside.
- Place the flour, parmesan, sugar and salt in the bowl of a food processor and pulse a few times to combine. Add the butter and process until the mixture is crumbly, then add the chilli crisp, egg yolk and lemon juice. Pulse until the mixture is the consistency of wet sand, then tip it into a large bowl and add the spring onion. Stir to incorporate, then knead gently to form a ball.
- On a clean work surface, roll the dough into a log about 25 cm long and 4 cm in diameter. Place the log on the tray with the sesame seeds, then roll the log until it is covered in the seeds. Wrap the log in plastic wrap and refrigerate for 30 minutes. Don’t worry if the dough is slightly soft and misshapen for now.
- After the stint in the fridge, remove the dough and, without removing the plastic wrap, roll it into a more even log, then refrigerate until firm – up to 3 days.
- When ready to bake, line a baking tray with baking paper and preheat the oven to 160°C fan-forced.
- Slice the cheese log into coins that are just under 1 cm thick and place them a few centimetres apart on the lined baking tray. If they break, just smoosh them back together. Bake for about 20 minutes or until golden brown. The base of the biscuits will be a deeper reddish-brown from the chilli oil as well as the direct contact with the heat of the tray – this is as it should be.
- The biscuits are soft when warm, but will crisp up when they cool down.
Preparation and Serving Tips
- Use your favourite brand of chilli crisp, or your own homemade version. I use Lao Gan Ma brand, but they will all work. Too much oil will make the dough soft and waxy, so leave as much of the oil in the jar as possible.
- The biscuits can be eaten on the day they are baked, but are at their best a day or two after, when they’ve dried out a little and the flavours have had time to meld together. They will keep, loosely wrapped in foil, for up to 5 days.