Beat the butter and Parmesan together until well combined
Add the almond meal, rice flour, cornflour and black pepper and mix until the dough starts to come together
Add the egg yolk and mix until a soft dough forms, if the dough seems dry, add cold water one teaspoon at a time
Divide the dough into two portions and roll into logs approximately 4cm in diameter
Wrap tightly and refrigerate for at least 1 hour
Preheat oven to 165°C fan-forced and line two baking trays. Slice the logs into rounds about 5-7mm thick (for more nibble size, cut the rounds into quarters)
Arrange on prepared trays, allowing a little room between biscuits, grate a little extra Parmesan and/or sprinkle some extra black pepper on top if you want to up the flavour profile
Bake for 14-16 minutes or until lightly golden around the edges.Allow to cool on the tray for 10 minutes before transferring to a wire rack