1 (16 ounce) package shredded sharp Cheddar cheese
1 (16 ounce) can sour cream
Preheat an outdoor grill for high heat.
Arrange cheese in a single layer on a large platter. Roll out the roll of cheese. Chase through the mixture to make a single layer. Season with pepper and salt and pepper to taste. Brush the top of the cheese with both of the remaining 1/2 cups sour cream and the Cheddar cheese mixture. Brush the top of both cheeses with the remaining 1 cup sour cream. Twist cheeses to resemble ribbons.
Place the gooey cheese topping on the grilled cheese. Grill 8 to 10 minutes on each side, or until golden brown. Slice cheeses and sprinkle with fresh parsley.