- 
										Preheat oven to 360°F/182°C. Line baking sheets with parchment paper. 
- 
										In a medium bowl, whisk together flour, baking powder, baking soda, and salt. Set aside. 
- 
										Pour melted butter into a large bowl and whisk in sugars until smooth. Add the egg, and whisking well until combined. Stir in vanilla. Add the flour mixture and mix, using a silicone spatula, until mostly blended. Stir in chocolate and keep mixing as little as possible, just until everything is blended. 
- 
										Roll dough into balls, each about the size of 2 tablespoons, and arrange them on the prepared pans, spacing them 3 inches apart. Sprinkle each cookie with a bit of coarse salt and bake for 10-12 minutes or until the tops are cracked and very lightly golden. 
- 
										Allow cookies to cool for a few minutes, then gently transfer cookies to a wire rack to cool completely.