Cranberry Apple Crisp

Ingredients 1 lb green apple (2 medium, preferably granny smith for its tart taste) 1 ½ cups fresh cranberries Zest and juice of one orange 1/3 cup brown sugar For Topping: 1 cup all-purpose flour 1/3 cup walnuts ground ¼ cup rolled oats ¼ cup brown sugar 5 tablespoons cold butter ½ teaspoon cinnamon  …