Butter and lightly flour 9 1/2" deep pie plate. Spread in mashed potatoes.
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Arrange 6 oz. Mozzarella cheese on potatoes. Top with tomatoes. Sprinkle with basil and oregano. Top with remaining Mozzerella cheese, Parmesan cheese and melted butter.Bake at 425 for 25 to 30 minutes or until cheese if melted.Cool slightly before cutting.