JOYCE'S CREAM CHEESE MASHED POTATOES INGREDIENTS: 4 lbs. baking potatoes             8 ozs. sour cream     peeled and quartered          8 ozs. cream cheese 1 1/2 teaspoons salt             1/2 teaspoon black pepper butter, melted, optional*       1/2 cup butter or margarine fresh parsley, optional* In large stock pot over high heat combine potatoes with enough water to cover.  Bring to a boil.  Reduce heat to medium; simmer until potatoes are tender, about 25 minutes.  Drain; return to pot.  Add cream cheese, sour cream, butter, salt and pepper.  Mash until smooth.  *Serve drizzled with butter and sprinkled with parsley, if desired. YIELD: 12 servings