Grease a 9″ round cake pan with butter and set aside
Scald the milk in a large heavy bottomed pot (almost boiling) over medium high heat
Pour in the cornmeal in a steady stream while vigorously whisking about a minute until it becomes “sludge”
Dump the mixture into a stand mixer with a paddle attachment
Add the butter and mix on low about 10 minutes until it cools enough to avoid cooking the eggs when they’re added
Add the eggs, salt, baking powder and sugar, then mix on low to medium speed until it reaches a smooth custard texture – just a minute or two
Fill the cake pan with batter and bake for 40-45 minutes until a cake tester inserted halfway between the edge and the center comes out clean
Cool for 5 minutes on a rack before serving with a dollop of butter
Notes
For a dense custard-like texture mix this briefly – just enough to combine the ingredients. For a light souffle texture, mix at a higher speed and longer to aerate the batter