Zucchini Chocolate Cake

1 cup vegetable oil

2 cups sugar

3 eggs

2 1/2 cups flour

1/2 tsp salt

1 tsp baking soda

1/4 tsp baking powder

1/2 cup milk

3 (1-ounce) squares unsweetened baking chocolate

1 TBSP vanilla

2 cups grated zucchini

1 recipe Chocolate Butter Frosting

In a large bowl combine oil, sugar, and eggs. Add dry ingredients to first mixture. Add milk and mix well. Melt baking chocolate in the microwave for 20-second intervals, until just melted. Blend chocolate and vanilla into batter. Stir in zucchini. Bake in greased 9x13 baking dish at 350 degrees F. for about 25 min. Cool and frost with Chocolate Butter Frosting.