For Topping: Place all the topping ingredients (flour, sugars, spices, butter, oats and nuts) in a food processor and process until the mixture is crumbly (looks like coarse meal) and there are no large pieces of butter visible. (This can also be done with two knives or your fingertips.) Set aside while you prepare the filling.
For Filling: Place the apple chunks in a large bowl, and lemon zest. Toss with the lemon juice and sugar. Transfer to your prepared baking dish Spread the topping evenly over the apples.
Bake for approximately 30-40 minutes (20 - 25 minutes for individual ramekins) or until bubbly, and the topping is golden brown. Remove from oven and place on a wire rack to cool for about 30 minutes before serving.
Serve with softly whipped cream or vanilla ice cream. Refrigerate leftovers and reheat before serving.
Submitted By: LauraM
Original Source: Joy of Baking