Use a wider slow cooker if you have one. That gives the cake more of a crumbly top surface. I used a 10″ diameter slow cooker and one of those big oval ones would work too. If you have the regular size crockpot then it will work too.
Peel and slice the apples and drop them right into the crock~pot.
Mix the sugar and cinnamon and sprinkle over the apples.
Stir with a wooden spoon to coat all of the apples with the sugar mixture.
Melt the butter in the microwave for a few seconds. Set aside.
Pour the cake mix into a medium sized bowl.
Stir in the butter and mix well. I use my fingers at the end to ‘pinch and roll’ to help incorporate the butter evenly and get that fine crumbly texture.
Sprinkle half of the cake mix/vegan butter mixture over the apples. Stir in well.
Sprinkle the rest of the cake mixture over the top of the mixed apples. Do NOT mix in.
Cover and cook on low 2 to 3 hours.