Caramel Chocolate Bars

1/4 cup butter, melted
2-layer pkg. yellow cake mix
2/3 cup evaporated milk-sm. can
1/2 cup chopped nuts
1/2 cup semi-sweet chocolate pieces
1/2 cup caramel topping

Combine the dry cake mix with the nuts in a mixing bowl. Stir in evaporated milk and melted butter. Spread half the cake mixture in a greased 9"x13" pan. Bake 10 minutes. Remove and sprinkle chocolate chips over hot crust. Drizzle the carmel topping over the chocolate pieces. On top of this drop teaspoonfuls of remaining cake mixture. Bake 20-25 minutes. Cool. Loosen sides of pan and cut into bars while still warm. Looks festive in colorful cupcake
papers. Makes 36.