Preheat oven to 350 degrees.

Lightly grease a 2-quart baking dish or six 3.5-oz ramekins. Pour pie filling into the dish or ramekins, and spread evenly.

In a medium bowl, mix together flour, oats, sugar, cinnamon, and nutmeg. Mix in melted butter. Spread over pie filling, and sprinkle with chopped nuts of your choice.

If using ramekins, place them on a baking sheet.

Bake in the preheated oven for 30 minutes, or until topping is golden brown. Allow to cool 15 minutes before serving.