With the rack in the middle position, preheat the oven to 200°C (400°F). Line 2 baking sheets with parchment paper.
In a bowl, combine the flour and salt. Set aside.
In another bowl, cream the butter and brown sugar with an electric mixer. Add the egg and beat until smooth and creamy. With a wooden spoon, stir in the dry ingredients and chocolate.
With floured hands, shape dough into balls, about 15 ml (1 tablespoon) each. Arrange 9 balls on each cookie sheet. Bake one sheet at a time until the cookies just start to brown around the edges, about 7 minutes. The cookies will be very soft in the middle.
Let cool on the cookie sheet.
Recipes with the "Healthy Pick" stamp have been evaluated by a registered dietitian member of the Ordre professionnel des diététistes du Québec.