Ten-Minute Chocolate Chip Cookies - River Cottage

Ingredients

• 125g unsalted butter
• 100g caster sugar
• 75g soft light brown sugar
• 1 medium egg, lightly beaten
• 2 teaspoons vanilla extract
• 150g plain flour
• ½ teaspoon baking powder
• A pinch of sea salt
• 100g dark chocolate, chopped into smallish chunks (or use milk chocolate, if you prefer)