Pecan Cake & Sauce

For the Cake:
1 package butter pecan cake mix
1 tub coconut pecan frosting
4 eggs
3/4 cup oil
1 cup water
1/2 cup chopped pecans

For the Sauce:
1 can sweetened condensed milk
2 T. butter
1/2 cup chopped pecans

Preheat oven to 350 degrees.  In a medium bowl, combine all cake ingredients except for the chopped pecans; mix well.  Stir in chopped pecans.  Pour batter into greased 9x13 pan.  Bake for 35 - 40 minutes.
In a small pot over medium heat, melt 2 T. butter.  Pour in can of sweetened condensed milk and stir.  Continue to stir until heated thoroughly, then add chopped pecans.  Stir again and remove from heat.  Pour over entire cake or individual pieces.