Oatmeal Cake

Name: Oatmeal Cake
Ingredients: 1 1/4 cups boiling water; 1 cup instant oatmeal; 1 stick margarine; 1 cup brown sugar; 1 cup less 3 tablespoons granulated sugar; 2 eggs; 1 teaspoon vanilla; 1 1/2 cups flour; 1 teaspoon baking soda; 1 teaspoon ground cinnamon; 1/2 teaspoon salt; 1 can evaporated milk; 2 cups brown sugar; 2 cups flaked coconut; 1 stick margarine, slightly melted; 1 cup chopped nuts