1375 degree oven. Blend butter well with electric mixer. Add masa harina and water. Beat; put defrosted corn in blender and with short pulses, coarsely chop corn at low speed, leaving some whole kernels of corn. Stir corn in butter mixture. Add cornmeal. Mix sugar, cream, salt, and baking powder. Pour mixture into corn mixture. Put into ungreased 8 x 8" pan (smooth top). Put into another pan of hot water 1/3 full. Bake 50 - 60 minutes. Take out and let set 10 minutes. Scoop out with ice cream scoop or rounded spoon. This sounds like a lot of work but it really isn't and so worth the effort!!!!