White Corn Polenta with Grana Padano
In a large pot over medium-high heat, bring 4 cups of water to a boil. Add the butter and salt, then add the polenta while whisking constantly. Cook, stirring constantly, until the mixture starts to bubble, then reduce the heat to medium-low.
Cook, stirring frequently with a whisk, until the polenta is tender and has absorbed the liquid.
Stir in the cream, and mascarpone and cook for 5 minutes, stirring constantly.
Stir in the Grana Padano, and taste for seasoning.
Remove from heat and pour the polenta onto a large platter and serve immediately.