https://www.mysupersave.com/Recipes/Detail/3902/Orange_Coffee_Cake_with_Broiled_Coconut_Topping
Yield: 9 servings
Preparation Time: 20 minutes; Baking: 35 minutes
Combine biscuit mix, orange rind, sugar, softened butter, egg and 1/4 cup of the milk in a mixing bowl.  Blend, then beat 1 minute at medium speed.  Stir in remaining 1/4 cup milk and the orange juice.  Beat 1 minute more at medium speed.    
Turn into a greased or sprayed 8-inch square baking pan.  
Bake at 350 F.  for 35-40 minutes.  Cover with coconut topping while still warm.  (Blend softened butter and brown sugar.  Stir in the orange juice, rind and coconut.)  Broil cake in its pan about 3 minutes or until coconut is lightly toasted.   
Source: the Florida Citrus Commission
Please note that some ingredients and brands may not be available in every store.
https://www.mysupersave.com/Recipes/Detail/3902/Orange_Coffee_Cake_with_Broiled_Coconut_Topping