Step 1Wash the escarole leaves in two changes of water. Trim the stems. Set aside the very tender yellow-green core, reserving for salads. Dry and cut the leaves into strips about one-half inch wide.
Step 2In a heavy saucepan, combine the stock and cream and bring the mixture to a boil. Add three-fourths teaspoon salt, then whisk in the polenta. Cook over low heat, stirring constantly with a wooden spoon, for 20 to 30 minutes, until the polenta is thick, soft and creamy. Stir in the Parrano cheese.
Step 3In a large saute pan, heat the olive oil over medium heat. Add the garlic and saute until soft, about 2 minutes. Stir in the red pepper. Add the escarole. You may need to allow half the escarole to wilt in the pan before adding the rest. When the leaves have begun to wilt, stir them carefully so that they become evenly mixed with the sauteed garlic. The greens are done when they are tender and wilted, about 10 minutes. Season to taste with salt. Serve the escarole on top of the polenta. Garnish with shaved Parmesan.