In a mixing bowl, combine dry ingredients; stir to blend. Add eggs, oil, shredded carrots, and vanilla; beat until well blended. Stir in pineapple, coconut, and the walnuts. Pour into a greased and floured 13x9x2-inch baking pan. Bake at 350 degrees for 50 to 60 minutes, or until a wooden pick or cake tester inserted in center comes out clean. Place cake in pan on a rack to cool. (once cooled you can frost if desired using below recipe).

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