Preheat the oven to 350 F and lightly grease an 8-by-8-inch
baking dish.
Add the pumpkin, coconut milk, sugar, cornstarch, vanilla, salt,
and pumpkin spice to a blender and blend until smooth and
creamy. Transfer to the prepared baking sheet.
Spread the cranberries evenly over the pumpkin filling.
Add the oats, flour, sugar, cinnamon, and salt to a bowl and whisk
to combine. Add the butter and mix until everything is coated.
Crumble the flour mixture evenly over the top of the cranberries
and gently press the crumble topping down.
Bake for 55-60 minutes until the mixture is bubbling around the
edges and the middle doesn’t jiggle.
Let cool 3 hours or overnight.