Prepare the Apples:
Preheat your oven to 375°F (190°C) and lightly grease a 9x9-inch baking dish.
In a large bowl, toss the sliced apples with lemon juice, sugar, cinnamon, nutmeg, and flour. Transfer the mixture to the prepared baking dish and spread evenly.
Make the Crisp Topping:
In a separate bowl, combine the oats, flour, brown sugar, salt, and cinnamon.
Add the melted vegan butter and mix until the mixture becomes crumbly.
Assemble and Bake:
Sprinkle the crisp topping evenly over the apple mixture.
Bake in the preheated oven for 35-40 minutes, or until the apples are tender and the topping is golden brown.
Serve:
Let the apple crisp cool slightly before serving. Scoop into bowls and top with a generous scoop of vegan vanilla bean ice cream.