Melt butter in a small saucepan over medium heat; cook for 3-4 minutes, stirring frequently, until butter browns and starts to foam. Remove from heat to cool.
In a medium mixing bowl, sift together flour, baking soda and salt. In a large mixing bowl, using a mixer on medium speed, beat together melted browned butter, brown sugar and granulated sugar until creamy - about 1-2 minutes. Beat in egg and vanilla until combined. Reduce mixer speed to low and gradually beat in flour until just combined; stir in chocolate chips and pecans until combined. Chill dough in the refrigerator for 30 minutes.
Heat oven to 350 degrees F. Coat cookie sheets with cooking spray.
Roll dough into balls (about 2 teaspoons per ball), place on cookie sheets, and flatten using the palms of your hands. Bake 8 minutes or until set and light golden. Cool on wire racks. Drizzle with melted caramel.