Place sausages in cold skillet; cook slowly over low heat, turning often, until brown and crisp. Meanwhile, add milk and egg to pancake mix; beat smooth. Stir in melted butter and grated apples. Pour batter on hot griddle, making pancakes about 4 " in diameter. Cook until brown underneath and bubbly on top. Turn; brown other side. Drain sausages on paper towels. Roll each link in a pancake. Serve with maple syrup. Makes about 12 rollups.