1.Preheat oven to 180°C (160°C fan-forced). Oil oven trays.
2.Sift flours and salt into medium bowl, rub in butter. Stir in sour cream, chives and enough of the water to make ingredients come together. Knead on floured surface until smooth. Cover; refrigerate 30 minutes.
3.Divide dough into four even portions. Roll each portion between sheets of baking paper until 3mm thick. Place dough on oven trays, brush with egg yolk; sprinkle with combined garlic powder, onion flakes and cheese.
4.Bake crisps about 20 minutes or until browned lightly. Transfer to wire racks to cool. Break into pieces when cold.
Store in an airtight container for up to 3 days.
Note
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