Johnny Appleseed would never of dreamed of this combo! But all the restaurants in New Mexico have it right.Green apple (Granny Smith) and green chiles make the perfect sweet-hot,all-american desert.Topped with ice cream.
Make the filling: In a large saucepan over medium heat,melt the butter.Add apples and toss to coat.Stir in 1/2-1 cup water,chiles,brown sugar,cinnamon,vinegar and Gran Marnier.Bring to a boil,reduce heat to low and simmer for 1 hour.Remove from heat and set aside.The filling can be prepared 4 days in advance.
Preheat oven to 400.Thaw pie crust and fill with pie weights.Bake pie shell for 20 minutes.
Meanwhile,make the crimble topping:Pulse all ingredients in a food processor,about 15 seconds until crumbly.Set aside.
Remove pie crust from oven,discard weights,and fill with prepared apple filling.Cover the filling with the crumble topping.Bake for 30 minutes until golden brown.