2. Peel and chop an apple. Measure about 1 cup of chopped apple and place it in a saucepan. Cover with an inch of cold water. Bring to a boil, cover, and simmer for 30 minutes. Drain the apples, reserving 5 tablespoons of their cooking liquid. Place the cooked apples and liquid in a food processor, and process until smooth.
3. Put the apple mixture back in the saucepan, and stir in 2 cups unrefined sugar. Place back on the heat, and stir until the sugar dissolves and everything begins to bubble. Pull off the heat. Whisk 3 (10g) packages of Natural Desserts Unflavored Vegan Jel into 1 cup of water. Quickly whisk this into the hot apple mixture. I returned it to the heat for a minute, but I don't think that was necessary. Stir in 1 t vanilla and 1 c chopped walnuts. (I think black walnuts would be spectacular, but I didn't have any.) The recipe I worked from called for rose water (which the other human doesn't like) or lemon juice (possibly too acidic for the vegan jel - the package warns against it), so we went for vanilla.
4. Acting quickly (as the mixture will begin to set up), pour your candy into the prepared pan. Cover and refrigerate for several hours or overnight. When completely firm and cold, use an oiled knife to slice it into squares, and toss them in powdered sugar. Store in the refrigerator.
If you cannot find the Natural Desserts product, you could probably get a similar result with agar or pectin, although some tinkering would be necessary. In truth, agar might be an improvement. While these taste great and were easily sliceable into squares, they are a bit softer than I want them to be. The firmness of agar would likely help them.