Cream together butter, shortening and sugar. Add the vanilla and eggs to the mixture and beat. In a separate bowl, combine the flour, cocoa, baking soda and salt, then blend with the other ingredients until well-mixed. Add the See's Super Chocolate Chips and walnuts to mix through.
Drop by teaspoonfuls onto a greased cookie sheet. Bake at 350 degrees for 10-12 minutes. Do not over-bake. Yields approximately 4 dozen cookies.
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