Preheat oven to 350°F. Arrange sweet potatoes in 13 x 9 x 2-inch glass baking dish. Stir butter, honey, and lemon juice in small saucepan over medium heat until margarine melts. Pour margarine mixture over sweet potatoes; toss to coat. Sprinkle generously with salt and pepper. Bake sweet potatoes until tender when pierced with skewer, stirring and turning occasionally, about 50 minutes.