Place your water in a large saucepan and bring to a low boil. Slowly whisk in cornmeal and continue to stir until bubbles on the surface of the polenta start to pop. Then lower the heat and continue to cook, stirring frequently, until the polenta becomes thick and starts to pull away from the side of the pot (about 5o minutes).
Once the polenta is cooked, add the salt, butter, and parmesan. Stir until they’re fully incorporated. Serve immediately.