Soak the cashews for 4-6 hours in cool water at room temperature or 1 hour in very hot water. Drain and set aside.
Make the Crust:
Preheat the oven to 350F. Lightly grease a 9-inch pie pan with cooking spray.
Place the pretzels in a ziploc and crush into very small pieces. Pour into a bowl and add the brown sugar and vegan butter. Stir to combine.
Pour into the prepared pan and press into an even layer. Bake for 10-12 minutes until toasted. Let cool for 15-20 minutes before filling.
Make the Strawberry Ice Cream:
Place all the ingredients for the ice cream (including the soaked cashews) in a high-speed blender. Blend until completely smooth.
Refrigerate the mixture for 1 hour (or up to overnight) until chilled.
Assemble your chilled ice cream maker and pour in the chilled ice cream batter. Churn until creamy and thick like soft serve.
Scoop the ice cream into the prepared crust and smooth. Cover securely and freeze for 4-5 hours or until firm. Before scooping, set out for 10-15 minutes to soften.
Top the pie with the diced, sweetened strawberries. Slice and enjoy!
This pie is best served the day it's made. Leftovers can be stored in the freezer but the crust may not be as crisp the next day.