Preheat your oven to 375°F (190°C).

Core the medium baking apples, leaving about ½ inch intact.

In a mixing bowl, combine rolled oats, packed brown sugar, melted unsalted butter, ground cinnamon, salt, vanilla extract, and bourbon. Stir until well blended.

Gently pack the filling into each hollowed apple so it overflows slightly.

Place the filled apples in a baking dish and bake for 30-35 minutes until tender.

Let the apples cool slightly on a wire rack for about 5 minutes before serving.