1/2 c. butter, softened
1/2 c. packed light brown sugar
1 egg
1 tsp. vanilla extract
3/4 c. all-purpose flour
2 c. (11.5 oz. pkg.) Hershey's milk chocolate chips, divided
3/4 c. chopped pecans, divided

Heat oven to 350 degrees. Grease pan 8x8x2 or 9x9x2 inch.

In small mixer bowl, cream butter, sugar, egg and vanilla until light and fluffy. Blend in flour. Stir in 1 cup chocolate chips and 1/2 cup pecans. Spread into prepared pan. Bake 25 to 30 minutes or until lightly browned. Remove from oven.

Immediately sprinkle with remaining 1 cup chips. Let stand 5 to 10 minutes or until chips soften; spread evenly.