2 cups semisweet chocolate chips
12 (1 ounce) squares German sweet chocolate
1 (7 ounce) jar marshmallow creme
4 1/2 cups white sugar
2 tablespoons butter
1 (12 fluid ounce) can evaporated milk
1/8 teaspoon salt
2 cups chopped pecans

Combine chocolate chips, German sweet chocolate and marshmallow creme in large bowl.
Combine sugar, butter, evaporated milk and salt in heavy skillet. Bring to a boil over medium heat. Cook for 6 minutes, stirring constantly.
Pour hot syrup over chocolate mixture. Stir with wooden spoon until smooth. Stir in pecans.
Spread into buttered 10x15 inch pan. Let stand until firm; cut into squares.

Source: allrecipes.com