Cut apples into chunks and place into a large mixing bowl. Add lemon juice, sugars, cinnamon, salt, and corn starch. Stir together and set aside to marinate.

In another bowl, combine topping ingredients except for oils and butter. Melt coconut oil and vegan butter, add to bowl, and stir to combine until mixture resembles wet sand.

Pour apple mixture into a greased baking dish, spread topping evenly. Bake at 350 degrees for 55-60 minutes until apples are bubbly and top is browned.

Let cool for 15-20 minutes before serving. Enjoy alone or with vegan ice cream.