Beat with mixer the cake mix, butter, and egg, until it is crumbly. Put in a 9 x 13" pan sprayed with PAM.
Mix the topping together (sweetened condensed milk, vanilla, coconut, egg, and nuts); Pour over first layer. Sprinkle with 1/4 c. coconut. Bake at 350 degrees for 30 - 40 minutes or until golden brown. Cool completely befoe cutting. ENJOY!