DR Pepper Cake

1 1/4 cup Dr Pepper
1 cup quick cooking oatmeal
1/2 cup margarine
1/2 cup sugar
2 eggs
1/3 cup flour
1/2 tsp. nutmeg  

Bring Dr Pepper to a boil and pour it over the oats, stir and let stand 20 minutes.
  Cream margarine; add sugar gradually. Then add eggs and beat until fluffy.  

Sift all dry ingredients and add to creamed mixture and mix well.  
Pour into greased 9-in. pan.   
Bake at 375ºF. for 45 minutes.
Remove from pan and spread topping (recipe below) over top and place under broiler until topping is bubbly.  

Topping

1/3 cup melted margarine
1/2 cup brown sugar
1/4 cup cream
1 cup finely grated coconut  

Combine all ingredients and spread on cake as directed above.