Cream margine, oil, and sugar, add eggs one at a time beating well after each addition. Blend in vanilla and buttermilk. Sift dry ingredients and add to creamed mixture. Stir in zucchini. Pour into greased and floured (ijust use Pam) pan 9 x 13 x 2. Sprinkle with chocolate chips and nuts. Bake at 325 degrees approximately 45 minutes or until a toothpick inserted comes out clean.
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