Melt butter in a large skillet over medium heat; add brown sugar and next 4 ingredients. Stir well. Add pecans, stirring well to coat. Remove from heat.
Spread coated pecans on a lightly greased 15" x 10" x 1" jellyroll pan. Bake at 325° for 14 to 15 minutes, stirring every 5 minutes. Cool completely. Break nuts apart.