INGREDIENTS
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150g (2/3 cup) unsalted butter
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150g (3/4 cup) light brown sugar
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75g (1/3 cup + 1tbsp) caster sugar
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2 tsp vanilla extract
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1 egg (from the fridge)
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1 egg yolk (from the fridge)
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280g (2 and 3/4 cups + 2 tbsp) plain flour
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1/2 tsp salt
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2 tsp cornflour/cornstarch
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1/2 tsp bicarbonate of soda
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1/2 tsp baking powder
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200g (1 cup) milk chocolate chips
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4 fun sized Snickers bars, chopped