Preheat oven to 350° F
Prepare 4 (8 oz) baking ramekins (I've used two 6" cast-iron skillets)
In a small bowl, add all of the streusel topping ingredients and mix until they combined (the topping will be crumbly)
In a medium bowl, add all of the ingredients for the apple filling and toss to combine. Distribute the apple mix between the ramekins, or into whatever baking vessel you're using.
Top with streusel topping.
Bake for 20-30 minutes, or until the streusel topping is lightly browned.
Serve warm or refrigerate