Add the apples to a small bowl and stir in sugar, cornstarch, lemon juice and spices. Divide evenly into two ramekins. Set aside while you make the topping.
In a bowl, whisk together the flour and baking powder. Cut the butter into small pieces and work it into the flour mixture using a pastry cutter or your fingers. Stir in buttermilk until dough forms.
Divide the biscuit topping in half and arrange on top of the apple mixture. Stir the sugar and cinnamon together and sprinkle over the cobbler topping.
Bake for 25-30 minutes until the topping is golden brown and the apple mixture is bubbling.
Notes
If you don't have buttermilk on hand, add a splash of white vinegar to ⅓ cup of milk.