Bring to boil water and margarine. Add oatmeal. Take off heat and cover; let set 20 minutes. Stir together other ingredients. Add to oat mixture. Pour into greased 9×13 pan. Bake at 350 degrees for 35 minutes.
1 cup brown sugar
1 cup Angel Flake coconut
1 cup chopped nuts
1 stick melted margarine
1 tsp vanilla
2 egg yolks
Before cake is done, make topping. Spread over hot cake and put back in oven about 7-10 minutes until top is bubbly and golden brown.
Originally made and reviewed here.