1. To make horseradish cream: in small bowl stir together sour cream and horseradish. Set aside.
2. To make parsnip fritters: in medium bowl combine parsnips, flour, scallions, salt and pepper. Toss, then add eggs and mix.
3. In large nonstick skillet over medium-low, heat 2 tablespoons of oil. Working in batches, use a 1/4-cup measure to scoop mounds of parsnip mixture into skillet. Flatten each mound into 3-inch patty, cook until golden-brown on both sides and tender in center, about 4 minutes per side. Set aside and cover to keep warm while cooking remaining patties in remaining 2 tablespoons of oil.
5. Serve topped with dollop of horseradish cream.