-Cooking Spray -2 large sweet potatoes, scrubbed, about 1 1/2 pounds -1-2 large egg white(s) -Your choice of seasoning. I use a creole pepper blend and Lawrys seasoned salt. Preheat the oven to 425 degrees F and grease a large non-stick baking sheet with the cooking spray (be generous with the spray). Pat the potatoes dry and slice lengthwise into 1/2-inch thick slices. Turn each slice flat and slice again lengthwise into even fries, 1/2-inch thick. ...