1. Preheat oven to 350. Grease a 13 s 9 inch baking pan; set aside. Mix oats and boiling water in a small bowl. Let stand for 20 minutes. Meanwhile, in medium bowl, mix flour, cinnamon, baking soda, and salt.
2. In large mixing bowl, beat shortening, white sugar, and the 1 cup brown sugar with mixer til mixed. Beat in eggs. Beat in oatmeal mixture. Add flour mixture; beat til mixed. Spread batter in prepared pan.
3. Bake for 30 to 35 minutes or til wooden toothpick inserted near center comes out clean. Put pan on wire rack
4. For topping, in pan, mix butter, coconut, the 2/3 cup brown sugar and milk. Cook and stir til boiling. Stir in nuts. Spoon topping over hot cake; cool completely. Makes 16 servings