This apple walnut cake is a perfect dessert for those who want to add more healthy fats to their diet. Made with walnuts, fresh apples, and whole wheat flour, this cake is moist, flavorful, and healthy. The walnuts add a crunchy texture to the cake, while the apples add natural sweetness and fiber. Serve it with a dollop of Greek yogurt or whipped cream for a delicious and healthy treat.