Mix coconut and pecans. Put into a greased 9 x 13 pan. Mix cake mix according to directions. Spread onto coconut-pecan mix.
In a saucepan, heat butter and cream cheese until warm enough to stir in confectioners' sugar. Spoon mixture on top of cake mix.
Bake at 350 °F. for 35 to 40 minutes. Do not cut until cooled.
This cake is not meant to be flipped over like other upside-down cakes.
Serve from pan.