Preheat oven to 325 degrees F (165 degrees C). Grease a 10 inch pie pan.
In a large bowl, mix apples, cinnamon and nutmeg together; turn mixture into pan. In a separate bowl, beat sugar, milk, 1/2 cup biscuit mix, eggs and butter until smooth. Pour over apples.
To Make Streusel: In a small bowl, stir together 1 cup biscuit mix, nuts, brown sugar and butter; mix until crumbly. Sprinkle streusel over top of pie.
Bake in preheated oven for 55 to 60 minutes; bake until knife inserted in center of pie comes out clean.
