1 pkg. reg. Duncan Hines brownie mix
1/2 c. finely chopped pecans
1 lg. Cool Whip

Mix brownie mix according to directions on box, adding finely chopped pecans. Bake at 350 degrees for 12 minutes. When cool, slice into 5 three inch slices. Stack layers with Cool Whip. Frost sides and top with remaining Cool Whip. Sprinkle top with chopped pecans. Refrigerate a few hours before slicing. May be made the day before.