Preheat oven to 350°.
Steam carrot, covered, 15 minutes or until tender.
Heat oil in a large nonstick skillet over medium-high heat. Add onion and ginger; sauté 7 minutes or until golden.
Combine the carrot, onion mixture, lentils, and the next 4 ingredients (lentils through egg) in a food processor, and process until smooth. Combine carrot mixture, oats, breadcrumbs, walnuts, and salt in a large bowl. Spoon mixture into an 8 x 4-inch loaf pan coated with cooking spray. Bake at 350° for 45 minutes.