Preheat oven to 275°F. Mix first 8 ingredients in large bowl to blend. Heat 2 tablespoons oil in large nonstick skillet over medium heat. Working in batches, drop sweet potato mixture by 1/4 cupfuls onto skillet. Using spatula, gently flatten each mound to 3 1/2-inch-diameter round. Cook pancakes until brown and cooked through, about 3 minutes per side. Transfer pancakes to baking sheet and place in oven to keep warm. Repeat with remaining batter, adding more oil to skillet as needed. Transfer pancakes to plates. Serve with applesauce and sour cream.