In a small bowl, beat the cream cheese, brown sugar and cinnamon until blended; beat in sour cream. Set aside., In a large bowl, whisk the eggs, flour, nutmeg, salt and pepper. Add the sweet potatoes, apples and onion; toss to coat., In a large nonstick skillet, heat 2 tablespoons oil over medium heat. Working in batches, drop sweet potato mixture by 1/3 cupfuls into oil; press slightly to flatten. Fry for 2-3 minutes on each side until golden brown, using remaining oil as needed. Drain on paper towels. Serve with cinnamon topping.