Butter Pecan Heath Cake

1 box butter pecan cake mix
1 can sweetened condensed milk
1 container Cool Whip, thawed
3 or 4 Skor or Heath chocolate bars, crushed

Bake cake mix as instructed in a 13 x 9-inch pan; cool.

Poke holes in top of cake with knife. Pour sweetened condensed milk over cake. Crush chocolate bars and mix with Cool Whip. Spread mixture over cake. Refrigerate.