German Chocolate Bars

INGREDIENTS
1 (18.25 ounce) package German chocolate cake mix
1 (14 ounce) package individually wrapped caramels
2/3 cup sweetened condensed milk
3/4 cup butter, softened
1 cup semisweet chocolate chips
1 cup chopped walnuts
optional: 1 cup coconut
DIRECTIONS
Preheat oven to 350 degrees F. Grease and flour 13 x 9 inch pan.
Melt caramels with 1/3 cup condensed milk.
In a separate bowl, combine cake mix with melted butter or margarine and 1/2 cup of condensed milk. Stir well.
Spread 1/2 of the cake mix mixture in pan and bake for 6 to 8 minutes.
Remove from oven and cover with caramels, chips and nuts and coconut. Put remaining cake mix on top. Bake for another 10 minutes.