Pre-heat oven to 375. Brush pie crust with egg yolk (or whites) and bake for 5 minutes.
Remove from oven, combine cranberry sauce, apples, nutmeg, and cornstarch and spread in pre-baked pie crust.
Mix flour, melted butter, pecans and sprinkle over top of pie filling.
Bake for 30 minutes or until bubbly around edges.
Top with whipped cream or vanilla ice cream and serve hot.