Apple Crumb Squares With Apple Cider Sauce

Name: Apple Crumb Squares With Apple Cider Sauce
Ingredients: 1 cup old-fashioned rolled oats; Apple Cider Sauce, (recipe follows); 1/4 teaspoon ground nutmeg; 1/2 teaspoon salt; 1/4 cup coarsely chopped walnuts, toasted; 1 teaspoon freshly grated lemon zest; 3/4 cup whole-wheat flour; 1/2 teaspoon ground cinnamon; This recipe calls for:; 3 tablespoons canola oil; 3/4 cup packed light brown sugar; Apple Cider Sauce; 1/4 cup apple-juice concentrate, thawed; 3/4 teaspoon baking powder; 3 medium tart apples, such as Granny Smith, peeled and thinly sliced; 3/4 cup unbleached all-purpose flour; 2 cups low-fat vanilla ice cream, or nonfat frozen yogurt