Mix the ingredients for the pie crust until well incorporated either in a food processor or using a pastry cutter to cut in the butter. Press into the bottom of a pie plate of onto a baking sheet. Bake for 15-20 minutes or until golden. Cool completely. Break or chop into bite sized pieces.
Meanwhile, cook the apple in the butter until softened. Add the sweetener and mix well. Set aside to cool.
Combine ice cream ingredients in a blender and process until smooth. Churn in an ice cream machine according to the manufacturer's instructions.
Once the ice cream has finished churning fold in the cooked apple and pieces of pie crust. Freeze until firm.