Cut the apples into chunks and place them into a large mixing bowl.
Add the remaining filling ingredients to the bowl - lemon juice, sugar, cinnamon, salt, and corn starch. Stir it all together with a spoon and set aside to marinate while you work on the crisp topping.
In a separate bowl, combine all of the crisp topping ingredients except for the coconut oil and vegan butter. Melt the coconut oil and vegan butter then add them to the rest of the ingredients and stir to combine. The topping should resemble wet sand once mixed well.
Stir the apple filling mixture again, then pour it into into a greased small baking dish or pie plate.
Spoon the crisp topping over the top in an even layer.
Bake the vegan apple crisp at 350 degrees for 55-60 minutes, or until the apples are bubbly and the top starts to brown.
Allow the crisp to rest for 15-20 minutes before serving.
Serve alone or with a scoop of vegan ice cream.