1. Preheat oven to 375 degrees F. Spray a 9" pie pan with cooking spray.
2. In a large saucepan, whisk together cinnamon, cornstarch, sugar, and water. Stir in apples and cook over medium heat until apples are just barely soft and mixture is thickened (8-10 minutes). Pour apple mixture into prepared dish. Set aside.
3. In a medium bowl, combine flour and baking powder. Stir in oil, honey, and buttermilk until just moist.
4. Drop biscuit dough by tablespoons on top of apples. Bake until golden brown (20-25 minutes).