Discover the best pizza spots in Greater Boston, from classic Neapolitan-style to Sicilian favorites. From tangy pies to ...

2 tablespoons butter 1 onion, chopped 2 1/2 cups canned crushed tomatoes (from one 28-ounce can) 1 teaspoon salt 1/4 teaspoon fresh-ground black pepper 1/2 cup heavy cream 1 pound cheese ...