Baked Polenta Layered with Mushroom Ragu - Lidia

Ingredients

• 1 batch (about 10 cups) Basic Polenta, freshly made and hot with or without freshly grated Grana Padano, (it will be richer if you include it, but without it is just as good) (Basic Polenta Recipe)
• 4 to 6 cups of any of the following sauces: Mushroom Ragu, Marinara Sauce, or Tomato Sauce
• 2 tablespoons soft butter, or more, for the baking dish
• 1 cup Besciamella, optional, (it will render the pasticciata richer and more complex)
• 1/2 to 1 cup grated Grana Padano
• 1 to 2 cups shredded Muenster or dry packed mozzarella, imported fontina , cheddar, or a cheese of your liking