Found this on the Martha Stewart Everyday Food website and I had to share. These look absolutely deeeeelish. Would make a great snack. :)
2 large egg whites
1-1/3 cups grated Parmesan cheese
4 small sweet potatoes (about 2 pounds), scrubbed and quartered lengthwise
4. Bake potatoes until tender and crisp, about 25 minutes. Serve sprinkled with more salt if desired.