This rich, homemade maple-walnut fudge recipe is wonderful to have on hand for nibbling or offering to drop-in guests. Beautifully packaged, fudge also makes a personal gift for the holidays.Notes: You will need a candy thermometer to make this fudge. Make sure you buy pure maple syrup rather than artificially flavored syrup. Read "Candy Basics" and "Fudge Pointers" below before beginning. To toast walnuts, bake in a 375° oven until barely golden under skins, 6 to 8 minutes.