Prepare a 9×13 baking pan according to directions on the cake mix box.
Mix pudding with milk according to package directions.
Add dry cake mix and mix with an electric mixer until cake mix is moistened.
Stir in ½ cup chopped pecans.
Spread in the prepared pan.
Bake at 350o for 30 minutes.
Frost when cool and sprinkle remaining chopped pecans on top.
