In a medium bowl, mix together the ingredients for the cranberry orange base until well combined. Transfer to a medium baking dish such as a 6-8 inch cast iron skillet.
Add all ingredients for the crumble to a medium bowl. Use a fork to combine the ingredients together, crumbling the dry ingredients into the butter until the mixture is chunky.
Crumble the oat mixture over the cranberries in the cast iron skillet.
Transfer to the oven and bake for 30-35 minutes or until golden brown on top and the cranberries are bubbling on the edges.
Let cool for at least 10 minutes then serve with vanilla ice cream and enjoy!
Notes
Nutritional facts do not include the vanilla ice cream for serving.