Make a vegan pie crust of your choice. I prefer my hot water pie crust, but if you are gluten-free, you can use my gluten-free pie crust recipe.
Roll out the crust and place it over the pie plate. Crimp the edges either with your fingers or a fork to make them look neat.
Preheat the oven to 350°F (176°C).
Peel, core, and slice 5-6 medium-sized apples into thin, even slices and place them in a mixing bowl.
Put your apple slices in a large mixing bowl, sprinkle with sugar, starch, cinnamon, and nutmeg, and toss until all the apples are evenly coated.
Pour the apples into the pie dish on top of the bottom crust.
Add softened butter, flour, oats, brown sugar, cinnamon, nutmeg, salt, and baking soda to a medium-sized mixing bowl. Mix with the back of a fork or a pastry cutter until the mixture is crumbly.
Sprinkle the crumble mixture evenly over the top of the apples.
Bake at 350°F (176°C) for 50-55 minutes until golden brown.
Notes
If you choose to use a premade pie shell, they tend to be small, so you may want to cut the recipe in half or make 2 smaller pies.
Sweet tart apples are best suited for this pie. I also find that I like the texture when the apples are sliced fairly thin.