Lightly grease a 3 qt. casserole combine cornmeal, salt and pepper. Mix together 3 cups water, yogurt, and olive oil. Pour mixture over cornmeal and stir until blended.
Bake cornmeal mixture uncovered 25-30, minutes. (Do not worry if the mixture does not look blended it will!) Stir cheese, herbs and prosciutto*into the polenta (taste and add salt if needed.)
Serve polenta with-in 5-6 minutes from removing from oven. If you are not ready for the polenta, turn oven off and let stay in oven until you are ready.
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