1 1/4 sticks (1/2 cup plus 2 tablespoons) unsalted butter, softened
1/2 cup packed light brown sugar
1/4 cup granulated sugar
1 large egg
1 teaspoon vanilla
1. Preheat oven to 375°F.
2. In a shallow baking pan spread coconut evenly and lightly toast in middle of oven, stirring once, until pale golden, 4 to 5 minutes. Cool coconut.
3. Into a small bowl sift together flour, baking soda, and salt. In a large bowl with an electric mixer beat together butter and sugars until light and fluffy. Beat in egg and vanilla and stir in flour mixture and coconut until combined well.
4. Arrange teaspoons of dough about 1‚ inches apart on ungreased baking sheets and bake in batches in middle of oven until golden, 8 to 10 minutes. Cool cookies on sheets 1 minute and with a metal spatula transfer to racks to cool. Cookies keep in an airtight container at room temperature 1 week.